Malicious PDF — malware analysis report

Static analysis result for SHA-256 387c0f714f9c0d13…

MALICIOUS

PDF

67.5 KB Created: 2020-12-09 22:41:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fedcc5d2e5ed585920db6f1fb9bce971 SHA-1: 977e6cce0815a2d9631912df3d4d0d71f90a60b0 SHA-256: 387c0f714f9c0d134ad54600d76ece0981e34d417a4f9221dcb3c88e7b6d8cbf
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 flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafffi.ru/123?utm_term=sevier+county+animal+shelter+sevierville+tn PDF link annotation
    • https://basuxebuj.weebly.com/uploads/1/3/1/3/131379820/47403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449965/normal_5f9e8451ee45a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5f8a4c05e5dc6.pdfIn PDF document text
    • https://lifuregetarip.weebly.com/uploads/1/3/4/3/134384561/9de943955e6b1cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499958/normal_5fcd64d13663c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_5f9bb740e8df4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393751/normal_5fafa9bbb73b6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wekibik/conception_2_ending_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2d21816-cd8d-4ef6-96b0-b04cba02a64a/74478151158.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3c655d26ff1194f85c811/t/5fcd10feeb18547f4b89d0dc/1607274752238/traffic_gore_hill_freeway.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf31cb474932ca266a4ca/1606218524997/weather_in_montego_bay_jamaica_in_august.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8620c9a6-ad4d-4356-9f94-89140f8aaf5a/kobavuziben.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e08512facd59ceacd9cd/t/5fc198b208845d0924c6e03d/1606523059319/joseph_mann_and_creed_ohio.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d3acc6229360ecc6007a/t/5fcc8905f94b6402b2144fc3/1607239941669/pebulegolixakaguj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB334 5304 bytes
SHA-256: e93db43df487d38b2d636b78a5955daf7a8042c7cbac9d5820b2ee2b39aaf76e
font_01_sfnt_off0000c521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC521 11752 bytes
SHA-256: 5773fa948bc9e15e0f7064d0c8fe0ef719a5fb79c0b7c5f4ae96a137a0787e38
font_02_sfnt_off0000eb49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB49 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

Open this report in the interactive analyzer, or submit your own file for analysis.