Malicious PDF — malware analysis report

Static analysis result for SHA-256 a89f6d0f9abe48bd…

MALICIOUS

PDF

83.9 KB Created: 2021-03-01 23:49:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36d09f8bea5aeed11b51724f5ed0244f SHA-1: bf719d50e7984d1c84acb165a1324d9438b9f5be SHA-256: a89f6d0f9abe48bda9cfea2716be489eb19711e2396ab54d6de17228786d1f4a
164 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 high likelihood of malicious intent. The PDF contains a large number of external links, suggesting a link farm or phishing attempt, with one URL specifically mentioning 'ppsspp games apk mod' as a lure. The presence of embedded JavaScript, though not fully detailed, further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/wix?keyword=ppsspp+games+apk+mod
    • https://zunotexiru.weebly.com/uploads/1/3/4/8/134890048/rafopi.pdf
    • http://jiwapadenejeza.getenjoyment.net/ar_lexile_fp_dra_and_girl_scouts.pdf
    • https://jowesezowu.weebly.com/uploads/1/3/4/3/134366841/tolivowijo.pdf
    • https://cdn.sqhk.co/padasagam/cIgQRhe/how_to_top_up_lebara_germany_using_voucher.pdf
    • https://sixagezox.weebly.com/uploads/1/3/1/6/131606695/5581140.pdf
    • http://zijixiteluwek.scienceontheweb.net/83710871800.pdf
    • https://cdn.sqhk.co/jigavozef/Vhj5vgd/faxuzimi.pdf
    • http://sagedix.medianewsonline.com/singer_simple_3223g.pdf
    • https://nonizevotete.weebly.com/uploads/1/3/1/3/131384281/7bf680711c.pdf
    • http://buwovavozu.getenjoyment.net/arras_del_espritu_santo_versculo.pdf
    • https://cdn.sqhk.co/pofakedajavo/hgg8gie/dodimunikataviso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lixasifasi/jetojuwidi.pdf
    • https://s3.amazonaws.com/murudute/agnes_obel_the_curse_piano_sheet_music.pdf
    • http://wonanikapudidak.atwebpages.com/17347469056.pdf
    • https://s3.amazonaws.com/wuwabobujasivor/potevomexizis.pdf
    • https://s3.amazonaws.com/nademopor/32183851542.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d1b.bin
2da79d23304a05c78565fee54767c34be98b3ed379dcdbd99f681cd48b5d0833
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1B 5216 bytes
font_01_sfnt_off00011ece.bin
696311f91a57c2f52d9649d2387a8be2c1c4d4343278911d12e76b767e9c224c
pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECE 10476 bytes