Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb7fe0ca57b7440…

MALICIOUS

PDF

69.5 KB Created: 2020-11-25 00:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4711e2704cab709c8c209bb0af36d491 SHA-1: d2b3e7abc49e40be98e84ce4bb55cec03332bace SHA-256: 7bb7fe0ca57b744063c18ab73d811700bd1b333a3617d8f85c3db1eb64dfe2ec
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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
  • 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/strik?utm_term=forever+with+you+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403822/normal_5f9e15e653374.pdfIn PDF document text
    • https://jivexine.weebly.com/uploads/1/3/1/3/131380908/4675952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475725/normal_5fae8b861aab2.pdfIn PDF document text
    • https://repafajekojila.weebly.com/uploads/1/3/4/3/134305679/nepigisa_sugegog_nawivopixove.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414169/normal_5f98a8c60f509.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455185/normal_5fb2986ab5456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453732/normal_5faea9a4d1c68.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/4693716.pdfIn PDF document text
    • https://tovalowu.weebly.com/uploads/1/3/4/3/134375552/499446.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tobobowu/aifmd_annex_iv_reporting_guidance_esma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7a36779-8b6e-49a8-a14d-1185965aa1f5/84687456747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e279472d-a7ce-4689-be87-b16fcb08f772/17917994278.pdfIn PDF document text
    • https://s3.amazonaws.com/pusumowi/3_pros_and_cons_of_geothermal_energy.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/clasificacion_bosniak_quistes_renales.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c69d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC69D 4696 bytes
SHA-256: 58e0aa58398a7f889de19eac2d356b2da74bead1594e71d50f59bee1a35f9a98
font_01_sfnt_off0000d6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C6 10748 bytes
SHA-256: 29dcf955c74924fbdef500dda31a63de365e7a8c3506939c1ea74d4bc23afb6c
font_02_sfnt_off0000fb4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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