Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01dbe3e46c7f638…

MALICIOUS

PDF

87.8 KB Created: 2021-04-03 07:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 00d3951b807ae5dced07263c98c83d43 SHA-1: 212733d4d9b4496c733ab11a5b6a11a52637b72c SHA-256: e01dbe3e46c7f6383d8d2ecf23123491402005dd8da55e5ac98b769a677f0e0a
126 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or SEO spam operation. The embedded question about biblical terms is likely a lure to attract traffic to these sites. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external URIs indicate malicious intent, potentially leading to further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://mezovuduw.ru/strik?utm_term=que+significa+la+palabra+medos+en+la+biblia+redimir PDF link annotation
    • https://bupitubijas.weebly.com/uploads/1/3/4/0/134040922/gejudafipobepas.pdfIn PDF document text
    • https://retedavaliloxi.weebly.com/uploads/1/3/5/3/135393755/bozerafakipik.pdfIn PDF document text
    • https://girusidopot.weebly.com/uploads/1/3/0/7/130738876/kezugedebuf_nudekumos.pdfIn PDF document text
    • http://icily.xyz/ap_psychology_psychological_disorders_webquest_answer_keyul6av.pdfIn PDF document text
    • https://tufelonidozuwux.weebly.com/uploads/1/3/2/6/132681512/6429829.pdfIn PDF document text
    • https://rofajubufilotol.weebly.com/uploads/1/3/1/3/131384128/9811465.pdfIn PDF document text
    • http://dimax.website/whatsapp_plus_new_version_apk_freel7975.pdfIn PDF document text
    • https://guvoruba.weebly.com/uploads/1/3/4/7/134742814/depideweliresi_mosotadomopat.pdfIn PDF document text
    • https://falatunasozenu.weebly.com/uploads/1/3/4/7/134762474/rebobupa.pdfIn PDF document text
    • https://mirivibi.weebly.com/uploads/1/3/4/2/134234555/9597024.pdfIn PDF document text
    • http://itdiscounts.info/tetosizezarotekisesevdlkn8.pdfIn PDF document text
    • https://roxogarafuxor.weebly.com/uploads/1/3/1/1/131164132/pijabarazedel.pdfIn PDF document text
    • http://godotobekof.scienceontheweb.net/skyrim_how_many_mods_is_too_many.pdfIn PDF document text
    • https://nimidakotogala.weebly.com/uploads/1/3/0/8/130874585/dobakapapobolof.pdfIn PDF document text
    • https://pixipemojawipe.weebly.com/uploads/1/3/4/4/134459682/najuziperitoj.pdfIn PDF document text
    • https://nitomono.weebly.com/uploads/1/3/1/4/131454496/40576fcc926.pdfIn PDF document text
    • https://zajebujop.weebly.com/uploads/1/3/4/9/134902249/xoluj.pdfIn PDF document text
    • https://jijoforupet.weebly.com/uploads/1/3/4/8/134864875/4077425.pdfIn PDF document text
    • https://vetaguluxidi.weebly.com/uploads/1/3/4/6/134656260/2d7e1b79.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixiluvigatekij.atwebpages.com/vifiba.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11372 5676 bytes
SHA-256: b02711eb09d465a3c9688067bfaace5d3e5d6ba1367b287a1000b09514000ce6
font_01_sfnt_off000126a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126A7 13448 bytes
SHA-256: 9b8bc8f1c6001d888e8b481d07647366d128fb1bdd63ba05e0c53a9af45f9558

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