Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f2d183262c3f1bd…

MALICIOUS

PDF

75.3 KB Created: 2021-03-09 07:22:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b8376022e377a3c2ec8ee54c91a4d320 SHA-1: 0e1418119c8950ac36950ff82ec440a6ad7e8a79 SHA-256: 3f2d183262c3f1bd332bdbcbd02248f757cfcea0f1f5f72c934c84c4ab01b346
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified as a link farm, with many pointing to disposable domains. The document body, though heavily obfuscated, suggests a lure related to 'Konsep agama dalam islam pdf'. The presence of ClamAV detection and ML classification strongly indicates malicious intent, likely for SEO spam or phishing to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://gimoguvi.ru/award?keyword=konsep+agama+dalam+islam+pdf PDF link annotation
    • http://hydraruzxpnew4af.exchange/matilda_novel_main_charactersjcl5b.pdfIn PDF document text
    • http://doordash.link/55609358378pf7k3.pdfIn PDF document text
    • http://tiktoktop.design/abecedario_en_ingles_y_espaol_para9ku9t.pdfIn PDF document text
    • https://wawogikaso.weebly.com/uploads/1/3/4/7/134726687/vikawivanazovufonin.pdfIn PDF document text
    • http://aicberg.net/full_movies_bollywood_2019vp6im.pdfIn PDF document text
    • https://sagetiruguw.weebly.com/uploads/1/3/0/8/130814856/c10d7336.pdfIn PDF document text
    • http://cetapp.xyz/pinenimurujofutmrh3q.pdfIn PDF document text
    • http://fredo.bike/avernum_2_crystal_soulsdj18n.pdfIn PDF document text
    • https://regenapewafixun.weebly.com/uploads/1/3/4/3/134364718/dosinonumox_guvekumepemif_nemedug_bulumivigoxav.pdfIn PDF document text
    • http://feyakast.online/zirigigoxatafijux18k5h.pdfIn PDF document text
    • http://shoop-fe.ru/37607456697yfrdy.pdfIn PDF document text
    • http://yoga-fitness.space/75329616178r0br2.pdfIn PDF document text
    • http://ripefaw.iblogger.org/jususavudizupivi.pdfIn PDF document text
    • http://gratoramaa.website/rapupijeganugisatebusibga4qz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fa90eb46-aa9b-4fd1-a2e8-e903ec8e50a4.filesusr.com/ugd/575fb0_15b5c342d2e8483fbacedb70c06f4443.pdf?index=trueIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_3bb54c852a0349e6a0e58177cc7ead9f.pdf?index=trueIn PDF document text
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_98847d359f5e454e9fdf1bf4b8e71003.pdf?index=trueIn PDF document text
    • https://b1e6e3cd-24a2-426a-8b7d-e8f4bd81915b.filesusr.com/ugd/83e584_14fa7772879b4dda9a17e9beab7de864.pdf?index=trueIn PDF document text
    • http://jazifuz.epizy.com/33577371489.pdfIn PDF document text
    • https://41fe7446-7195-45c8-906d-de5e784989f9.filesusr.com/ugd/e02969_3510c6fe49204177a9a69dc5b3abc8ab.pdf?index=trueIn PDF document text
    • https://fb4bdcd3-28a3-4206-a6c3-fb267f511c23.filesusr.com/ugd/0ad562_e02186b4aa2e4d3389cc8e05f9460310.pdf?index=trueIn PDF document text
    • https://3c2b787d-8465-4662-bdcc-bf736d584291.filesusr.com/ugd/8760e7_981ced919a0747d895136f76a44a18ea.pdf?index=trueIn 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_off0000eab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB2 5236 bytes
SHA-256: b50e3496428d4fbcd540dd2720e662cf64da7d52e53f75a19bdf48dd624d0d42
font_01_sfnt_off0000fc7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7D 10400 bytes
SHA-256: 128535333be0d4d56840a6b16b7c6e332d6e6f4da920786b0b0b908c700816c1