Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f1b6575fb5063d…

MALICIOUS

PDF

70.7 KB Created: 2021-01-11 09:08:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 303d8fbb9e7c9a48d9e4a5a7c85b2c89 SHA-1: 713344260cb276b733755aa271283c3ebc40fa00 SHA-256: 95f1b6575fb5063d495dc4aa126cc45f3bca28773b03c5de8f8398d2c4861c1f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of external links, suggesting it's part of a link farm or phishing campaign. The primary URL, 'https://traffset.ru/aws?utm_term=betpawa+app++uganda', is likely used to redirect users to a malicious site, possibly for credential harvesting or further malware delivery.

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 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.
  • 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://traffset.ru/aws?utm_term=betpawa+app++uganda PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488339/normal_5fef35adbfe22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_5f88737a20129.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390663/normal_5f925d1fc3ed2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464297/normal_5fb694d5cc91b.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/RvShahg/pasuronapukojinemine.pdfIn PDF document text
    • https://cdn.sqhk.co/jowapezo/tvhjSgi/pivinapumidafiwomedufewil.pdfIn PDF document text
    • https://getenulezawo.weebly.com/uploads/1/3/4/8/134897364/3322231.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386349/normal_5fea06b95b47e.pdfIn PDF document text
    • https://cdn.sqhk.co/simirides/gcUxhif/projecty_rts_3d_full_version_apk.pdfIn PDF document text
    • https://jenititufevi.weebly.com/uploads/1/3/4/5/134595561/fojudox-nawiz-lulipilowubazed-nabamulole.pdfIn PDF document text
    • https://cdn.sqhk.co/mikakiraw/zPgjWSa/misasisudoxikokirawap.pdfIn PDF document text
    • https://cdn.sqhk.co/digiwejasipu/ihe8jda/tiesto_imogen_heap_hide_and_seek_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/hhegigd/47949231287.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/jdUt5nA/gigakuwevudilim.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/eicmfnI/download_tiny_miners_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fogobewataja/1zMS9dV/pebafejini.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/penale/arteritis_temporal_tratamiento.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/menodumewira.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_off0000d76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76F 4960 bytes
SHA-256: 9053f4ed37b97a333ea5b796429742710392a60dae331f381f57a1d25e5263bb
font_01_sfnt_off0000e87f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87F 10420 bytes
SHA-256: 1b8be3e3aa2d2658b4d22d897ab9fc6295681d4593afb02c3d8c232d08ee35da

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