Malicious PDF — malware analysis report

Static analysis result for SHA-256 63599c56c9f276fb…

MALICIOUS

PDF

75.3 KB Created: 2020-11-26 00:55:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 078b2dc407dda3a350eb6502c2dde276 SHA-1: bc33eaaa33cf4b88a97afa776df0ee44302a04d4 SHA-256: 63599c56c9f276fb7c140659c23b495d0b585451b8b529087fbba219a1e70822
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, with one prominent link pointing to 'traffking.ru'. This, combined with ClamAV detection as 'Pdf.Phishing.Trojan', strongly suggests a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=hot+pink+sandals+size+12 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388598/normal_5fb4c28c33d50.pdfIn PDF document text
    • https://binufigelivu.weebly.com/uploads/1/3/4/7/134775083/gawam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368489/normal_5f8e16d8c72ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490269/normal_5fbdf410bd550.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389353/normal_5f97a34349b00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491673/normal_5fba40f1987d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5fb7913208031.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387816/normal_5fae2f7fc7a7d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e569777a-23ef-4597-be1f-752047e16fec/32743338263.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/72899912904.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55f287f-8d75-4c4b-9c68-85486c54f551/56163000455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efcda712-7feb-4d6f-83ae-8ebb196fd078/half_dragon_dnd.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/bsp_thread_drill_size_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bfdfe55-88d0-46d4-8d25-5bb641d2366b/potapovazikotufetebow.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF32 5116 bytes
SHA-256: ed0cf67883b99b1550e455b2d95a13b187e7be047b2817bed78637f3ad0ff99b
font_01_sfnt_off0000f0b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B0 1912 bytes
SHA-256: 80a4cfd859b9bb1e8faa36d0b2de836cd4647eeb869bd113d8e2047271df502c
font_02_sfnt_off0000f9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9DF 11372 bytes
SHA-256: 7e59e1eed9a7bd6cb0384f0ee597ee07f9d8739a41ecd89a96a998ea9c31043c

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