Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c7afb80876684c8…

MALICIOUS

PDF

79.7 KB Created: 2021-03-01 13:24:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 8de42e6b8981a7468cb2f93f8fa2af43 SHA-1: 25262bf342437d8a379e2a6356ffbb55fd0a5ea4 SHA-256: 7c7afb80876684c8cdad9bcf2b12d6231792bc2304178693220a091cf9a99456
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 phishing or trojan threat. It contains embedded URLs that redirect to suspicious domains, likely serving as part of a phishing campaign. The document body, though heavily obfuscated, suggests a lure related to search queries, aiming to trick users into visiting the malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/award?keyword=how+to+change+time+on+g+shock+ga+110 PDF link annotation
    • http://lizoguxumugef.mywebcommunity.org/sas_survival_handbook_first_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471691/normal_601ed615b561e.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/ibwOJif/capsule_corp_logo.pdfIn PDF document text
    • https://tiwebusimevadeb.weebly.com/uploads/1/3/5/3/135346158/c70dc0c43.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/90440720725.pdfIn PDF document text
    • https://likemopulijufo.weebly.com/uploads/1/3/0/7/130739197/92d5ba625866.pdfIn PDF document text
    • http://presentinsta.online/what_was_the_purpose_of_the_red_pyramid3xgru.pdfIn PDF document text
    • https://viluxesoxumubi.weebly.com/uploads/1/3/1/4/131406714/zozipef.pdfIn PDF document text
    • http://pixxel.life/shintoismo_libro_sagradokv18t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369914/normal_602978245bca3.pdfIn PDF document text
    • https://betixajivuf.weebly.com/uploads/1/3/4/9/134900014/dubodosulozer_puvela.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381528/normal_5fcdc0bbb08d7.pdfIn PDF document text
    • https://wemuwenaxi.weebly.com/uploads/1/3/5/2/135298044/xadomojolug-sazekukebafuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485801/normal_6025e018cc08b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuwedilejom.myartsonline.com/lasko_t48314_performance_48-in._tower_fan_with_remote_control_t48311.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/siemens_hearing_aid_models_and_prices.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/34813544023.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/kaxoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/lazesuwukesi.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
    • 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_off0000e2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CD 5396 bytes
SHA-256: fc6003c412e0b1cf0eac8d057c73a79734e0bacbbd42dd2227fe27677e40772e
font_01_sfnt_off0000f51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51B 10536 bytes
SHA-256: 626883df84df5f09fa32f45e40f066929c744418a1c17bdeeb004b114b1a13c8
font_02_sfnt_off0001197e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197E 16296 bytes
SHA-256: 15128285344048d76b584a6587ab2ccb2c75eee889948d4c665368cae9e92c8f

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