Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd56add768ed1a70…

MALICIOUS

PDF

64.7 KB Created: 2020-12-23 10:41:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1d553361a62dc8868737b9b34ba34aeb SHA-1: bd4b69c41d5294608f418c6c6804310fa8cd0cc8 SHA-256: dd56add768ed1a70a2500a0bd281fa0047323ee791ad645170dd7d5a4fd8f4e2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary external links, 'https://traffking.ru/strik?utm_term=minion+mip+turbo+dave+robot', is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure suggests a malicious document intended to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/strik?utm_term=minion+mip+turbo+dave+robot PDF link annotation
    • https://kepelawurolunuz.weebly.com/uploads/1/3/4/0/134017158/gikixu-javuwetib.pdfIn PDF document text
    • https://tatonipek.weebly.com/uploads/1/3/4/8/134874136/fusofu.pdfIn PDF document text
    • https://bokesavuxi.weebly.com/uploads/1/3/0/9/130968985/06d43ed765.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/2ca9b738-5585-4a0e-a20e-12071320d84e/colin_b._donovan_stl.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/enlightenment_now_the_case_for_reason.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/fupotozoradilovuzet.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/holy_bible_nkjv_apk_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/779f54ac-9942-4202-8831-69e92f8baee8/35994897169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99eea51c-18af-4ced-a1ab-98e909405325/wisasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6c62b3a-5f6b-4545-93a3-a432c35fb31c/cabrio_dryer_af_code.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/95482740752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f370f7f-08cf-491d-8e5f-5ef0415e51e4/nic_2.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA96D 4984 bytes
SHA-256: f3a971c5c5ecab892b912fd4747736900f80ebed20d6e3b8900a7aed6e59a792
font_01_sfnt_off0000ba37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA37 2012 bytes
SHA-256: bfc83ee8b94fe6f5a48d81775a513f3e736df6f46893d607f3426fe3a585faa4
font_02_sfnt_off0000c392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC392 10704 bytes
SHA-256: 3a983ff12ce7c06d33ac87bb359e2ec14d5bdae1ccaac5bb6905a19f1b8368e6
font_03_sfnt_off0000e7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AB 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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