Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c07c66f1ebe320f…

MALICIOUS

PDF

69.6 KB Created: 2021-10-03 05:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 011fce479f06f465b61ab0a83e0bedbd SHA-1: c2c11479634ef6c31d353f8695d6563c1f7e123a SHA-256: 0c07c66f1ebe320fe5bfbbc47903300f741203487c38d40be176a5dab684b409
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains a single image and minimal text, typical of a screenshot designed to hide clickable links. The numerous embedded URLs point to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute malicious content or redirect users to phishing sites. No scripts were extracted, but the presence of multiple external links indicates a likely attempt to download further payloads or redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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 https://pistant.ru/uplcv?utm_term=rich+snippets+for+services PDF link annotation
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/f3b4364c845231263c1effab4cb99294/jejunarugopogijuxusuv.pdfIn PDF document text
    • http://centralgiving.com/media/userfiles/file/kuxowomeveboduzaxu.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161463a2400672---11167310258.pdfIn PDF document text
    • http://kasand.com/userfiles/12641327473.pdfIn PDF document text
    • https://habibitours.com/ckfinder/userfiles/files/kawatuxivuvefojesinar.pdfIn PDF document text
    • http://www.atccs3.it/atccs3/fckeditor/editor/ckfinder/userfiles/files/99917417212.pdfIn PDF document text
    • http://laibros.com/ckeditor/userfiles/files/jozovemubabatupasetude.pdfIn PDF document text
    • https://areopag.ru/sites/default/files/uploads/15189821135.pdfIn PDF document text
    • http://nextlab-semi.com/files/fckeditor/file/fixalutipunexevagigafun.pdfIn PDF document text
    • https://haciendaloscipreses.cl/upload/file/reborimajopilubenenapo.pdfIn PDF document text
    • https://dnsbp.com/all4help/fckuserfiles/file/nirurilemufifakipezo.pdfIn PDF document text
    • http://german-ex.com/images/blog/file/jiwul.pdfIn PDF document text
    • http://carrozzeriardue.it/userfiles/files/85597043073.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/mamopiwiwapolosebowetube.pdfIn PDF document text
    • http://mp-journal.com/media/file/baxudakisif.pdfIn PDF document text
    • http://bafiti.com/sklep/userfiles/file/rodeb.pdfIn PDF document text
    • https://senfina.top/uploads/files/63006721254.pdfIn PDF document text
    • http://www.taxivanclass.com/uploads/ckfinder/files/93757124775.pdfIn PDF document text
    • http://tdbakademi.org/userfiles/files/68983055674.pdfIn PDF document text
    • http://les-dvorik.ru/userfiles/file/nafalesiwetodakife.pdfIn PDF document text
    • https://wangwangcamp.com/uploads/files/202109150907021207.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/161348429353cf---sudezoje.pdfIn PDF document text
    • http://mikllc.mn/uploads/files/xitikulokonorunejij.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161303c59950e5---fepelijekerusasumu.pdfIn PDF document text
    • https://pinyardim.com/calisma2/files/uploads/bogoteginamojod.pdfIn PDF document text
    • 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_off0000b315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB315 14332 bytes
SHA-256: 393f06aa5a762bb54dfd60b02b53a08978f61c3b0cc6fd565674bab123f63762
font_01_sfnt_off0000d6b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000eecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECD 10480 bytes
SHA-256: 71d4ebbf7d60eae3e84b13c39bfca6cc6f7cd91aaa392e591b7d6b52cd4ca333

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