Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d72a1ebbedba56e…

MALICIOUS

PDF

71.8 KB Created: 2021-02-25 19:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5319ca26edc6109752576964d7ab5fda SHA-1: d1664e8854e9a743737908aa8d0cff8fac584f82 SHA-256: 2d72a1ebbedba56e14a46f30a9f762ce1c7708bdcd2f08adac00cdeda966c246
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a phishing site disguised as a product deal. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to a malicious external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/123?utm_term=snap+on+digital+torque+wrench+1%252F2+price
    • https://cdn-cms.f-static.net/uploads/4421627/normal_601656a586d44.pdf
    • http://jijipefifi.iblogger.org/dell_e6410_specs_i7.pdf
    • https://cdn-cms.f-static.net/uploads/4391315/normal_602db450098a0.pdf
    • https://cdn-cms.f-static.net/uploads/4414672/normal_6022a3ae0f241.pdf
    • https://cdn.sqhk.co/fogibadeku/cgdl9AY/tap_tap_dash_2.pdf
    • https://static.s123-cdn-static.com/uploads/4479470/normal_5fe3e7dd090b0.pdf
    • https://cdn.sqhk.co/ralapogifur/ovjgZjf/slot_car_track_designer_free_download.pdf
    • https://static.s123-cdn-static.com/uploads/4473322/normal_600389620d483.pdf
    • https://cdn.sqhk.co/peferitukofa/UidhYjg/spina_bifida_types_radiology.pdf
    • https://static.s123-cdn-static.com/uploads/4452587/normal_6002fec3eec4b.pdf
    • https://static.s123-cdn-static.com/uploads/4421341/normal_60072cb94f3f5.pdf
    • https://cdn.sqhk.co/wobimore/ibZDK56/xakidivivefexeni.pdf
    • https://static.s123-cdn-static.com/uploads/4389387/normal_5fcef78faa887.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bogeguva/centrelink_forms_mod_c.pdf
    • https://s3.amazonaws.com/tobaziw/luwozuporijuwatisoj.pdf
    • http://pewuzakij.epizy.com/free_fillable_acord_form_125.pdf
    • https://s3.amazonaws.com/lukepepe/21067984101.pdf
    • https://s3.amazonaws.com/vabedafozo/free_job_alert_software.pdf
    • https://s3.amazonaws.com/mejados/putufisaletij.pdf
    • http://pukowevuvifa.rf.gd/fererarapojefebasetavu.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_off0000d852.bin
503377dca3dac7c2329d081ec14f18410f5e82fb64307ddc09c8524e94891c21
pdf-font-stream PDF embedded font (sfnt) at offset 0xD852 5696 bytes
font_01_sfnt_off0000ebc8.bin
a7f3288bf38adb7e1cc89a129d4ef6fbe2b57dc0462edf089a0668bba32d4f51
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC8 10988 bytes