Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd5fa3bbbf9c887…

MALICIOUS

PDF

83.5 KB Created: 2020-12-23 19:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0e421408849816d9e5b95f7997967610 SHA-1: 7a9833b9af8cd4b74528aaef86fab8cdd43575fc SHA-256: ccd5fa3bbbf9c8877910be5fe4176d0a1592c1c8b8721845452d878ef5631859
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, suggesting a link farm or phishing attempt, with a primary URL pointing to a game hack lure. The document's structure and embedded links are consistent with a phishing campaign designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://trafficel.ru/strik?utm_term=zombie+hunter+sniper+apocalypse+shooting+games+hack PDF link annotation
    • https://cdn.sqhk.co/bodovukig/Nif5RRl/88658294205.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374968/normal_5fcd4182a3275.pdfIn PDF document text
    • https://luwimaxilonava.weebly.com/uploads/1/3/4/7/134772317/dofikujezupux.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/08cf4d38-d078-4b61-8f24-f73f1ab7ab67/fotesejuwuzofadizudubirip.pdfIn PDF document text
    • https://s3.amazonaws.com/dirijazi/things_that_start_with_kl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4cd9717-a362-4fe7-a7bc-6da83f7821d9/dawafokenisetunetorufet.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/355668808.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17c58c75-e1fc-42b4-9345-220487b178e4/77124430354.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/55555130708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95c72111-a2b5-4889-85a9-2b3500fc0731/90675538863.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB05 13372 bytes
SHA-256: 5aed7c97aeb661c696e70fb93e77b1bcd2863059ffb3cbff824a2441c86e5524
font_01_sfnt_off0000f6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 5492 bytes
SHA-256: 364c617d6f717bae1ab5b01da3e5c1f6b7ac65903828547b53048e850488c53d
font_02_sfnt_off00010954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10954 13300 bytes
SHA-256: 6f8e273d9038773f9113de32af33c704ebc848f89fb449205126eb1a7f146ac7
font_03_sfnt_off0001326c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1326C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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