Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d61737abaf57a5…

MALICIOUS

PDF

63.4 KB Created: 2020-12-16 14:19:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b3961d9da42e168692c2ade0a01fadc4 SHA-1: 9716c1ca187e39cac784397247cb8e6a21135a2f SHA-256: 65d61737abaf57a54af26886527c2649ab7cf0e35fddfaebd099005d6e392d58
96 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains an embedded URL, https://traffking.ru/123?utm_term=circle+pdf+printable, which is likely used to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the malicious URL and the high detection scores strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=circle+pdf+printable PDF link annotation
    • https://jakoxizejibak.weebly.com/uploads/1/3/4/3/134348863/figisil.pdfIn PDF document text
    • https://newajijamo.weebly.com/uploads/1/3/4/7/134750143/422060.pdfIn PDF document text
    • https://pelofaneb.weebly.com/uploads/1/3/4/2/134235527/rejalizinonaji.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/tugekewekuzefelux.pdfIn PDF document text
    • https://divuvefa.weebly.com/uploads/1/3/4/7/134759037/xegadijazosibut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3aff645712565405e893/1606302465250/jcpenney_corporate_office_human_resources.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10ac260f2895dc1e8a19d/t/5fc2e909f3de5e49b5c4a508/1606609162287/rosen_plaza_hotel_wedding_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/india_cricket_match_date_sheet_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/welibironaxipuduwi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bcfb2e537a05ef083615/t/5fc127c93c6ccf69f38754b8/1606494153583/28983286533.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/indiana_hunters_ed_course_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc54e01affbf90a6607a482/t/5fcc7ad95177ea328cbb0f4c/1607236314231/light_up_skechers_song_remix.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_off0000bed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBED7 5016 bytes
SHA-256: 134b73a4b6ecaa1f1b47ed4b27a91fe027698766736766e7adc870628fef1334
font_01_sfnt_off0000cfec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFEC 9800 bytes
SHA-256: 8e06b1b28577c82c549432f5cc4034ef3d1b060d78b21afd998a88e3598148f9

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