Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd99ea391471c7a…

MALICIOUS

PDF

80.3 KB Created: 2021-03-20 20:01:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 34ff4a7839b3fead02be76d53c204e7d SHA-1: 3bb5f14d91b6a8366519946648bdafeffdeb0338 SHA-256: bdd99ea391471c7a94aa488ff53ea9c740706a4de4add4ad599778fd1607b02d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to other PDFs, suggesting a link farm or SEO manipulation tactic. The primary URL, 'https://soxebez.ru/award?keyword=fondant+cake+decorating+for+beginners+pdf', is presented as a resource but likely serves as a lure for phishing or malware distribution. ClamAV and ML classifiers strongly indicate maliciousness, classifying it as a phishing trojan.

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://soxebez.ru/award?keyword=fondant+cake+decorating+for+beginners+pdf PDF link annotation
    • https://cdn.sqhk.co/tororukiwuri/fFm5Ege/zodolevuzo.pdfIn PDF document text
    • https://lezuzanufebaj.weebly.com/uploads/1/3/4/8/134873312/2424560.pdfIn PDF document text
    • http://wetepuzasuvuroz.22web.org/escala_de_apgar_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/dikarulik/jdqiBjf/87721258493.pdfIn PDF document text
    • https://lipojiwogim.weebly.com/uploads/1/3/0/7/130776075/6129585.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/qCyRcJP/fdic_call_report_glossary.pdfIn PDF document text
    • http://wogedebepodev.22web.org/bili_akh_babbal_rai_song.pdfIn PDF document text
    • https://poxobavu.weebly.com/uploads/1/3/1/4/131453713/tenolun_naxuvajebojozez_sanutupes_jobiwitug.pdfIn PDF document text
    • https://cdn.sqhk.co/wujodazera/eievZje/chamkila_punjabi_song_video.pdfIn PDF document text
    • https://lobobofu.weebly.com/uploads/1/3/4/6/134680821/kiseratimakopo_pemoluwilomej_rudurubofised.pdfIn PDF document text
    • https://cdn.sqhk.co/lamidipeke/hjaheha/18405964139.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/zamemigojat/someone_s_gaze.pdfIn PDF document text
    • http://nibijifituvi.epizy.com/how_to_make_rap_beats_on_garageband.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/53647415819.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/31391519262.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/denetafixu.pdfIn PDF document text
    • http://daraxelasapok.rf.gd/what_qualifications_do_you_need_to_be_a_lash_technician.pdfIn PDF document text
    • http://dikiboxexoginag.epizy.com/fluke_1507_price_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/bangladesh_national_cricket_team_funny_video.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_off0000ee67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE67 5240 bytes
SHA-256: 547397872c12de2b0115906cc6d3abf89b2ebfa0758c3a1fc2bb288dd236dc75
font_01_sfnt_off00010047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10047 11116 bytes
SHA-256: c407e83595c1ca56025520aa34716d400b43f1d709071ea2cd2896bfbb7b6148
font_02_sfnt_off000125d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125D3 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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