Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fa1c8290aed3622…

MALICIOUS

PDF

88.5 KB Created: 2021-03-31 10:47:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 61cc06afda6a82829afa40543c2a6f54 SHA-1: 3035f1f820a47760eb202ec2e6fc615df865bce6 SHA-256: 7fa1c8290aed36224b1d09cf1e333b9a67d00479ea55ffcc5b8a12b529680c92
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with a prominent one leading to 'fokemale.ru', suggesting a phishing or malware distribution lure. The PDF's structure and the presence of external links point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://fokemale.ru/strik?utm_term=a+shepherd+looks+at+psalm+23+free+download PDF link annotation
    • http://kinoxca.xyz/hp_8620_costhwfqb.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/gas_laws_equation_sheet_answers.pdfIn PDF document text
    • http://davebamonuzove.medianewsonline.com/edit_text_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402711/normal_6050451030ed9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381532/normal_5fd155b4690ad.pdfIn PDF document text
    • http://about-central.com/how_many_types_of_curriculum_evaluationvov5w.pdfIn PDF document text
    • http://fusitekive.iblogger.org/dibadevisexazamuj.pdfIn PDF document text
    • https://gesuveta.weebly.com/uploads/1/3/2/6/132680901/vomuvituladerig_mupudepulil_zewelu.pdfIn PDF document text
    • http://kinerexasuxemo.getenjoyment.net/apj_abdul_kalam_vision_2020.pdfIn PDF document text
    • https://wopedibim.weebly.com/uploads/1/3/4/5/134585971/d2535b2339938.pdfIn PDF document text
    • https://jaduxopedarev.weebly.com/uploads/1/3/4/7/134749363/wufized.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481847/normal_6046998b52b23.pdfIn PDF document text
    • https://xitarowax.weebly.com/uploads/1/3/2/6/132681505/5b66886d9b028f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384471/normal_6043f88dbfa2f.pdfIn PDF document text
    • http://sigifiketatoge.22web.org/75022222468.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ligujizulogi.atwebpages.com/tajujexufilosi.pdfIn PDF document text
    • http://putunoxixowelo.atwebpages.com/commutative_associative_and_distributive_laws.pdfIn PDF document text
    • http://dofanetanezuji.rf.gd/vuwasukupisukufadigevel.pdfIn PDF document text
    • https://99470c7d-c692-4648-a7b8-36ea19db2883.filesusr.com/ugd/ab059d_a3c50bccd2fd43449b78d388c600f862.pdf?index=trueIn PDF document text
    • http://zuvineduwofuxo.epizy.com/balanced_chemical_equation_examples.pdfIn PDF document text
    • https://1a29c1bb-85e0-41a3-8ed0-924d3e0831a4.filesusr.com/ugd/4cd51e_651bb28807d94415bd40117448c1f664.pdf?index=trueIn PDF document text
    • http://zawitonomabela.rf.gd/49321842988.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_off00011940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11940 5720 bytes
SHA-256: d2ae23f2086043f5c32edac5b7725f7689eb4e282c5c88b12f66b905a8c8be19
font_01_sfnt_off00012c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C9C 11324 bytes
SHA-256: 516840ea38b39ca1b4afd1b6e7a5fca4cf6f1fa16abbfa80cee20d13eb2a9584

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