Malicious PDF — malware analysis report

Static analysis result for SHA-256 1682e7d6aadb5beb…

MALICIOUS

PDF

67.0 KB Created: 2021-02-22 19:08:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 86338fefa0ee108d2a09b076615f0fd9 SHA-1: 89f79c57aa49f1d8a3604438865f2cc12f4f0654 SHA-256: 1682e7d6aadb5bebf9f3dc43a3a1dabdb1cc46e14a1904cc7cfc254a82dd9841
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded URLs pointing to suspicious domains, including one that appears to be a link farm. The document body, though partially corrupted, suggests a lure related to 'Abercrombie and fitch size guide', which is likely a pretext to drive users to the malicious URL.

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://baarspo.ru/wix?keyword=abercrombie+and+fitch+size+guide PDF link annotation
    • http://claire-irk.ru/is_carbon_monoxide_acidic_basic_or_neutralvi8ih.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470017/normal_600c433597c11.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/7gdcjdZ/xefajewezipis.pdfIn PDF document text
    • http://mini-cam2.club/453864948985l15h.pdfIn PDF document text
    • http://zubiki.top/lord_woolf_final_reportq0p09.pdfIn PDF document text
    • https://jabofewikan.weebly.com/uploads/1/3/1/4/131437477/rujunutumu-dipexagetojek-dixob-sinivebadem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476443/normal_5fd5fbaf13aad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427105/normal_5ff7cc0bb6472.pdfIn PDF document text
    • https://sazotavivi.weebly.com/uploads/1/3/1/1/131164406/facd6dd727bf5.pdfIn PDF document text
    • https://cdn.sqhk.co/gikokimofegi/ejeiejg/29812674393.pdfIn PDF document text
    • http://talakam.space/hoover_smartwash_automatic_carpet_cleaner_parts8kf5s.pdfIn PDF document text
    • https://rajepejejema.weebly.com/uploads/1/3/4/8/134860913/netikinexez.pdfIn PDF document text
    • http://usersonlineguardingsettings.site/kabafo7bu8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482623/normal_6012e37da494b.pdfIn PDF document text
    • http://bogavevi.22web.org/free_template_daftar_riwayat_hidup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fetufebutegiv.rf.gd/nesevosagukedamavi.pdfIn PDF document text
    • http://kagufunoziwezu.epizy.com/bram_stoker_s_dracula_movie.pdfIn PDF document text
    • http://nasobozavas.epizy.com/prototype_biological_imperative_save_file.pdfIn PDF document text
    • http://xupudajiwozov.epizy.com/nusafopawirasosu.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_off0000c8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8BF 5580 bytes
SHA-256: d662da439debee4a98c22ca68cbb9f37b92db0788b6efdb97b7d99d08b71dc90
font_01_sfnt_off0000db96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB96 10308 bytes
SHA-256: d6d2a2e1bf94437b32805f83c3964d04fb5bc96ab7597ac55db3c802e51ee4bd

Open this report in the interactive analyzer, or submit your own file for analysis.