Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a47871d09ac71d6…

MALICIOUS

PDF

71.0 KB Created: 2021-05-30 06:43:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 54abc18a6ef9deaca592e185a6f4b89b SHA-1: d0a3af76094bc410b2bc822ba8e4d4150ea7b957 SHA-256: 9a47871d09ac71d65a47dd75e17054b11874d9e05aa4bf0b3f411d07f20b7588
156 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified as a potential phishing or malware distribution lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a tactic to distribute malicious content or engage in SEO manipulation. ClamAV detection and ML classification strongly 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://soxebez.ru/123?utm_term=kodeyondara+adiyalli+nammibbara+payana+song PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409403/normal_602077c69a976.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465259/normal_605ee19ecbb29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454679/normal_5fe5e04075b7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411923/normal_6004006b6f9fc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367297/normal_5fcdd04366d04.pdfIn PDF document text
    • https://didefitelov.weebly.com/uploads/1/3/0/8/130874246/281ed66e9b6b1.pdfIn PDF document text
    • https://xipasole.weebly.com/uploads/1/3/4/8/134853136/8692506.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476011/normal_6004cab650749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415962/normal_6044a6b76e3db.pdfIn PDF document text
    • https://sejevijuwev.weebly.com/uploads/1/3/2/7/132712154/xuvegazifiwijop_mididagi.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/0a588953-8a87-4a14-85ed-d13e7bd4264b/36573782859.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b65396a3-090c-4279-88c4-ef0d3c3bfa04/why_does_my_bobbin_jam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7f42746-9869-47c0-ab6e-19bb66360539/resistance_band_back_exercises_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1197933-9684-4ff5-b19d-2b900841ca74/next_diary_of_a_wimpy_kid_movie_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7956133-ee05-4419-8d8c-932fb5904740/15363378634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed6197b1-07f1-43a8-92b9-a8fa7429145c/75782832255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/805c46ed-9860-4ee2-ad0d-fe7ee2a3b6d8/9845859128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0645acfb-6b33-40ee-8a77-6e5f4101e67a/parasite_nick_drake_letra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb014f97-696b-4bd7-a31c-dcd24f8cf586/dsc_user_pin_blocked.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD929 5492 bytes
SHA-256: 83ec21794d68b8ea23026a8a8b5fc36eefa3c49c3744db3dd595d14d5705dcb5
font_01_sfnt_off0000ebc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC5 10164 bytes
SHA-256: 3c08a9f645e36f2c8e0cb40ab52e6ba331199c896bb06579a22f986730bd8dd0

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