Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc1a0502c4f50be…

MALICIOUS

PDF

80.5 KB Created: 2020-11-19 15:19:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 217cd71fa21909eb7357fb2382fb1ad4 SHA-1: db54c69ff540e2b43ee109e417dd47a2956c5a67 SHA-256: 0bc1a0502c4f50be044b8257ead3b269c89b2f633a121e64e63c175a86705eb9
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=quimica+organica+pdf+resumo In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390350/normal_5fadff5c834a6.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/mijiku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407782/normal_5f967b37ef10a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_5f89cd90423e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446489/normal_5fa315b85e184.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/jesewotatit_peteri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378410/normal_5fa56a362fd53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405208/normal_5fa362cf840e1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/82063390501.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/10019274752.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/terraria_world_viewer_1.4.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/kohls_coupon_code_march_2020.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_off0000fc11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC11 5504 bytes
SHA-256: fdf84563be38bf46b47d39ff17d543073a83c7fe24dede2aaae3ed703caa4379
font_01_sfnt_off00010eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAE 12128 bytes
SHA-256: e7845666007d38cd5f10a088a4d1f2152f880015d60ac1f6a9572657003b3f47