Malicious PDF — malware analysis report

Static analysis result for SHA-256 376671bcbe6341a6…

MALICIOUS

PDF

79.4 KB Created: 2021-05-13 17:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6645d0c307caaa8126d411e05804a272 SHA-1: 7ff6b5fdcd92514b4025b842a23f4e0a40b94d15 SHA-256: 376671bcbe6341a6259265481649ddb88d774f53a0647924cab2874df1a079c8
136 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious. Heuristics indicate it contains an advance-fee scam lure, directing users to a suspicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious website, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://resalured.ru/strik?utm_term=does+britax+pioneer+convert+to+booster
    • https://cdn.sqhk.co/guranotup/jOFThcK/hero_xpulse_200t_bs6_price_in_chennai.pdf
    • https://cdn.sqhk.co/zoxemetakol/cbhgLgi/27844582724.pdf
    • https://cdn-cms.f-static.net/uploads/4390097/normal_602a36610fb08.pdf
    • http://wozupabalaviv.medianewsonline.com/difesaxokejobeduti.pdf
    • https://cdn.sqhk.co/vebudirepo/ehdjh9l/jepaxagabaxip.pdf
    • https://cdn-cms.f-static.net/uploads/4421969/normal_604972d544634.pdf
    • https://static.s123-cdn-static.com/uploads/4370057/normal_5fc617bb669e1.pdf
    • http://toxipoxekej.medianewsonline.com/nabevekonibajuvuvo.pdf
    • http://mezajozugabaso.getenjoyment.net/islamic_bangla_boi.pdf
    • https://cdn-cms.f-static.net/uploads/4456165/normal_601794777f426.pdf
    • https://cdn.sqhk.co/xugumewaz/VX2hgJL/15464981813.pdf
    • https://cdn-cms.f-static.net/uploads/4470389/normal_601cda8c72463.pdf
    • http://rupazaduxil.mywebcommunity.org/sukikezutodiliwilijikaw.pdf
    • https://cdn.sqhk.co/pofaxexaxi/hegjKji/vabomoterusotinesibo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wudibirewuduto/36605201229.pdf
    • https://s3.amazonaws.com/telasebisu/acr_form_bps_16_kpk_education.pdf
    • https://s3.amazonaws.com/rogugagatuf/cuanto_es_10_pulgadas_en_cm.pdf
    • https://s3.amazonaws.com/gonasidupij/diary_of_a_wimpy_kid_the_long_haul_movie_characters.pdf
    • https://s3.amazonaws.com/jebokizez/76340888531.pdf
    • https://s3.amazonaws.com/lorugipopuxe/acido_nitroso_hno2_estructura_de_lewis.pdf
    • http://xaposekesudonod.epizy.com/3333388798.pdf
    • http://muwaziri.epizy.com/sezixogajekujiworojofowi.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_off0000f81d.bin
d456c30157ac7b3f456c73cadcb1bb71bf7d57690e5ace89cb7884fff4556f80		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF81D 5164 bytes
font_01_sfnt_off000109bf.bin
2fa3a10d7d024d5b6efc9b987541f1d9995ca371af58b3c22aee5e787c1b3b27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109BF 11256 bytes

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