Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0225474bc846a81…

MALICIOUS

PDF

72.0 KB Created: 2021-01-29 11:38:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1de0b42061b1ab38dd0d1e63e7d84f6e SHA-1: 4e9370910db8fd4493eaabb1b61e8eaff0826122 SHA-256: e0225474bc846a8168f1f3b1a18168ae7ba34e79c545159b1367bea13b5dd5b1
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/aws?utm_term=cadillac+and+dinosaurs+apk+for+pc PDF link annotation
    • https://devumevone.weebly.com/uploads/1/3/4/5/134589636/1713987f85bb29.pdfIn PDF document text
    • https://rigawegafo.weebly.com/uploads/1/3/4/5/134587157/tegom.pdfIn PDF document text
    • https://cdn.sqhk.co/rakapuvad/gjVmjdR/cute_wolf_boy_skins_for_minecraft.pdfIn PDF document text
    • https://midezotadodagof.weebly.com/uploads/1/3/5/3/135326840/tekigitox-bonodowotogot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465259/normal_5ff3ffdc729cd.pdfIn PDF document text
    • https://kukibujez.weebly.com/uploads/1/3/1/6/131637652/pukusota_bizodusuz_bibud.pdfIn PDF document text
    • https://mefosenide.weebly.com/uploads/1/3/4/7/134715399/lusenurodowif.pdfIn PDF document text
    • https://buseziji.weebly.com/uploads/1/3/1/3/131398529/redigofepawuzag-boguro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379731/normal_5fe31e7fd4b57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4506200/normal_5fdc92a423940.pdfIn PDF document text
    • https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/mobirixokenenu_sovelifatono_lipiw_karazof.pdfIn PDF document text
    • https://dosemawa.weebly.com/uploads/1/3/5/3/135388865/f66bf8e47e273.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425005/normal_60076e2b64b03.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://koxosam.rf.gd/90399056766.pdfIn PDF document text
    • http://tepusijanakigat.epizy.com/guided_elk_hunts.pdfIn PDF document text
    • http://tikikenuf.epizy.com/guidepost_growth_equity.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4E 5120 bytes
SHA-256: 733f7e715535e094da16978a84df528ce53773e34e1fdd891d714782fa9c507e
font_01_sfnt_off0000efc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC7 10292 bytes
SHA-256: 1d55c43ea2799a69a4fe334342815939a144a27231936f5fc88268b62569e2d7

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