Malicious PDF — malware analysis report

Static analysis result for SHA-256 852e333f2a17dc45…

MALICIOUS

PDF

79.9 KB Created: 2021-06-12 05:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e8845fb63274101b2e063f018f7fae21 SHA-1: 629a87dc07210edcb61f66c7eac581886122e17e SHA-256: 852e333f2a17dc452e625578df420db3c6eae1c9730f5d37ea1a3c4d8ecb2dd7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains a link farm pointing to compromised WordPress sites, likely intended to redirect users to malicious content or downloads. The document body, though heavily obfuscated, contains text related to 'mp4 series movies free download', suggesting a social engineering pretext to entice users to click the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://huntic.ru/uplcv?utm_term=mp4+series+movies+free+download PDF link annotation
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/68c6b7115408b1ebd7c548b285ab1ff4/rozuvajumusinitevud.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/1282cbb659e4b5fac8a4455c75cd974b/dotobip.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16075cdb329e49---92370349629.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/bunebisosigikuwup.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/d422f73f907529fb3c8cbf13ab774f01/97674154823.pdfIn PDF document text
    • http://facilitymanagementassociates.com/survey/userfiles/files/40112737615.pdfIn PDF document text
    • https://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/34l8q2u857is9ceb442pae1h1e/telufezujosivurudunatep.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/n475klvlgot21hdmvici8p4t0o/jojadakagiwida.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/8j5vk81vc3060nu9b9m4v09nh0/dozeporibubebuxatagan.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/b88891b7ad724389119df233f0eae497/fexifaxopofunenamixe.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160c314abb6a7e---jaxokagetalobujixe.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9680ae962f---tovoxokuwikojadexafobobok.pdfIn PDF document text
    • https://mvpartners.be/images/uploadedimages/file/10481017497.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE28 5140 bytes
SHA-256: dcb10c4fc5a3828d1b2c93c715b9298961b9b66e0aeb159e1e71526281f259e0
font_01_sfnt_off0000ffa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA2 10824 bytes
SHA-256: c4b417c7fce1cf58f43453306fcd51357f73ae2cd644881d5e1c715187ece6a5
font_02_sfnt_off0001247b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1247B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176