Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07c0bd1faab7439…

MALICIOUS

PDF

87.8 KB Created: 2021-07-29 17:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 777b2fbb77789424590df992001bb44b SHA-1: 6fb1202b367015e77315d4f6b5a5f7a3b26e9700 SHA-256: e07c0bd1faab7439808b8a5e767e2d4c08e866219d73c7ac3d43e96b313ef962
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document flagged by ClamAV as a phishing trojan. Heuristics indicate it functions as a link farm and a callback phishing lure, prompting the user to call a number for issues like billing or fraud. While no scripts were directly extracted, the PDF structure and link farm behavior suggest it's designed to lead users to malicious sites or engage them in a scam. The presence of multiple links to compromised CMS upload storage and disposable hosting further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://fittbike.hu/files/file/95366978352.pdf In PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bb4b6114276---86164194090.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/ogbhcvdtrlatjustgsdvuti0bl/sidatixujujeb.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/tadof.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b46bb1a3bbd---69524231495.pdfIn PDF document text
    • https://radmangroup-ye.com/rgfiles/file/jedawiz.pdfIn PDF document text
    • https://travelstore.tn/userfiles/file/pukokubapemepalogufedaji.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ded590ec3---1218007783.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/3kjr62rl7vqsm7vkgpihrravca/87483147125.pdfIn PDF document text
    • https://elektrona.cz/files/file/11157440746.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/88815c17fcfff78613357a8542c6da35/buramotipagurifuko.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/7a7b0e90742a052d4ffb82ea11ebca7d/64382274795.pdfIn PDF document text
    • https://cissud.it/uploads/ck_editor/files/44047886657.pdfIn PDF document text
    • https://zionapostolicministries.org/uploads/file/46147909931.pdfIn PDF document text
    • https://stegopackaging.com/wp-content/plugins/super-forms/uploads/php/files/mljfc4j2bkkab4qa6nh4to399j/mebeberodepuro.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6b6ec868f---30642156074.pdfIn PDF document text
    • http://b-solutions.net/userfiles/file/mexokepatubu.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/23fb1d2136d948ee0ae59e72fdf12252/suwuse.pdfIn PDF document text
    • http://haphadoor.com/upload/files/futajegovoserejusazaw.pdfIn PDF document text
    • https://speeddating.lt/speeddating/ckfinder/userfiles/files/59654207394.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/bdaa7a6cfb317ade07b2913347a05aba/55189765146.pdfIn PDF document text
    • http://mindatpeace.us/uploads/files/kokerivapesuxibojuso.pdfIn PDF document text
    • http://apnorajasthan.net/userfiles/file/79163829493.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/d40c9g8u10vio60ftvfjjtdscr/tefazaponikebivasap.pdfIn PDF document text
    • https://ei-hotel.com/free_images/files/24287155706.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=how+to+activate+pa+ebt+cardPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF725 16096 bytes
SHA-256: cd1ed710aa8f1353070523262ced72165e6cb770b9d0207f68c01be963810d4b
font_01_sfnt_off00012098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12098 10472 bytes
SHA-256: ece679ad6af134f1ac22628610fd8c07a39c243516513ea013f0b201d11c7c14
font_02_sfnt_off00013854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13854 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.