Malicious PDF — malware analysis report

Static analysis result for SHA-256 5345acb2ed1722af…

MALICIOUS

PDF

72.4 KB Created: 2021-03-07 02:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 490195fc3feb4f3cdf7a60c39837a3e1 SHA-1: 1775f4106bfcb45b51324815eb5556b0e491c366 SHA-256: 5345acb2ed1722afc436fc309ce912a985918e9abb77f76f13119980cf5d7cf8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kuzutuzo.ru/award?keyword=log+log+graph+paper+2+cycle PDF link annotation
    • https://tutonaxubetu.weebly.com/uploads/1/3/5/2/135296536/puxelavove.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/a_song_of_fire_and_ice_in_order.pdfIn PDF document text
    • https://jasofemelufes.weebly.com/uploads/1/3/0/7/130740231/449138328567b13.pdfIn PDF document text
    • https://cdn.sqhk.co/suxumeva/FPJjc1h/vocabulary_builder_test_prep.pdfIn PDF document text
    • https://vokesilito.weebly.com/uploads/1/3/4/4/134400786/mabibut.pdfIn PDF document text
    • https://cdn.sqhk.co/melivetipi/Mkbhajh/69582460843.pdfIn PDF document text
    • https://sawawinuta.weebly.com/uploads/1/3/1/6/131606003/ffa08b91.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/aLgiha6/beruv.pdfIn PDF document text
    • http://reguvixelupuj.iblogger.org/sennheiser_ew_100_g4-835-s_1g8.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/5hiYzgd/sprint_drive_adapter.pdfIn PDF document text
    • https://cdn.sqhk.co/tobijoge/hdnhbja/99973843514.pdfIn PDF document text
    • https://venireza.weebly.com/uploads/1/3/5/9/135959939/5183213.pdfIn PDF document text
    • https://kisewosa.weebly.com/uploads/1/3/1/0/131070890/2cfe8.pdfIn PDF document text
    • https://vixezijimike.weebly.com/uploads/1/3/5/9/135993975/4c880.pdfIn PDF document text
    • https://nonesuwenuvav.weebly.com/uploads/1/3/4/4/134400251/gifosumatujogeg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixopiv.onlinewebshop.net/93513362744.pdfIn PDF document text
    • http://dexixikix.epizy.com/93553326350.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/163042466.pdfIn PDF document text
    • https://s3.amazonaws.com/wolawatin/wesitodakasorimediwidi.pdfIn PDF document text
    • http://gozipoxux.rf.gd/damaramib.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/binogukizonoboted.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/joselimasikovoz.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_off0000df9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9D 5192 bytes
SHA-256: eeb4aa3d7ba5f957c62dba3031e02b3cf250cbc06ccb25c96542d1f1dc849f4e
font_01_sfnt_off0000f156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF156 10316 bytes
SHA-256: ef6da4f0213a9d38df8445db52289cdcd015ad687c393a45585cb8f9fd45a669

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