Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1f3d9872699836…

MALICIOUS

PDF

94.8 KB Created: 2020-12-24 07:06:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9402dafa46cf77c9e3609f5642cfb177 SHA-1: ef87c735afaba65c3720ce8a96a68b3f675f03d4 SHA-256: 0b1f3d9872699836aa41dded2de926df514b8fc4f0938a0afcb528a9af631e9c
96 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 embeds external URLs that direct users to attacker-controlled resources. 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
  • 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://trafftec.ru/123?utm_term=80cc+bicycle+engine+kit+upgrades PDF link annotation
    • https://cdn.sqhk.co/bagudivibi/AgfIlEU/80451282388.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387424/normal_5fa68bf161890.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488855/normal_5fcabc4a30788.pdfIn PDF document text
    • https://cdn.sqhk.co/xenetomapum/iKjbSgd/97366232979.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385620/normal_5f96c7712f20f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451227/normal_5faf2baf99823.pdfIn PDF document text
    • https://cdn.sqhk.co/lewivapawo/jhfhadf/83266226273.pdfIn PDF document text
    • https://cdn.sqhk.co/zezoxomop/dCgfghT/subterfuge_phonetic_pronunciation.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://uploads.strikinglycdn.com/files/f6a461c8-8199-49f0-8d81-9e6410599a3a/vanilla_sugar_cookies_for_decorating.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8324b728-bc83-40bf-81dd-770939fdaf8a/74778266435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e504636c-c0b1-42c2-b115-9dea50c95dde/asgard_s_wrath_quest_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6988804-35b8-44a4-9c23-14f13968b967/91783617486.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_off0001258c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258C 5560 bytes
SHA-256: c58a167f56f4e80d060dafb32f2bdb557cb1e7743752ba7d8e01630d7ff536b8
font_01_sfnt_off00013873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13873 11708 bytes
SHA-256: c7b913ac50222bef55914486237322e472fae2141f4d500e5fe393f3127fddf4
font_02_sfnt_off0001602a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1602A 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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