Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6b3b2afd8f2c4a…

MALICIOUS

PDF

108.2 KB Created: 2021-02-25 12:03:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 42eae22fffea4eab8404969e775f14cc SHA-1: fb4eabf02e84cb56b40029ed3e29899b9b12aa6d SHA-256: ca6b3b2afd8f2c4a7cd665fc41f993c0493b9a904c673f8fb0925694387db779
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous embedded URLs, many of which point to disposable hosting and are likely used for phishing or distributing further malware. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic specifically indicates a link farm on disposable hosting, suggesting a malicious intent to obscure the true destination or host a large number of phishing pages.

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://leonvi.ru/wix?keyword=pathfinder+2e+metamagic+mastery PDF link annotation
    • http://antonioit.space/fraccion_generatriz_de_3_423drk.pdfIn PDF document text
    • http://vengriya.space/7995524113ak1c1.pdfIn PDF document text
    • https://temisufe.weebly.com/uploads/1/3/5/3/135384001/8d4f2f4220803.pdfIn PDF document text
    • https://kitowido.weebly.com/uploads/1/3/5/3/135348724/jefuregogi.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/40073227020.pdfIn PDF document text
    • http://naturebiolog.fun/3345234010885v5g.pdfIn PDF document text
    • http://rezotu.xyz/how_to_cake_it._com_recipesjk147.pdfIn PDF document text
    • http://magic-spring.com/samrat_ashoka_tamil_movie_songsw1e0o.pdfIn PDF document text
    • http://autoupgrade.website/adventure_capitalist_guide_eventsl0fh9.pdfIn PDF document text
    • https://silatasetexa.weebly.com/uploads/1/3/1/6/131637876/kujazasubativatik.pdfIn PDF document text
    • http://copyright-security-ig.com/407923946514vnqd.pdfIn PDF document text
    • https://gomimujexewawid.weebly.com/uploads/1/3/1/0/131070583/madulapubep_vakime.pdfIn PDF document text
    • http://physcoo.com/american_standard_furnace_installation_manualhxkou.pdfIn PDF document text
    • http://redita.fun/sipidilubudakuvori5az2e.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/teginazuxoxeleronet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/holy_tamil_bible_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/dimubapipunoxaxowe.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/xobinuvanulupokidefiba.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/78860769351.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FBD 5316 bytes
SHA-256: c067e5eac1b1e022f0337a11e447eac5910882b96dd47debca893c02ecc978a6
font_01_sfnt_off0001719a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1719A 10420 bytes
SHA-256: 3890af7ed81d32d779d1518842ba209d566de5bb318b5845f5c850db99d0b437
font_02_sfnt_off00019538.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19538 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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