Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c09980b939170ed…

MALICIOUS

PDF

65.7 KB Created: 2020-12-10 03:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4bdf36928f40bd59d961f4dd839bcb03 SHA-1: d8a601a23979a13b918f8d6dd89aff7bc42cb6cf SHA-256: 9c09980b939170ed1c5e5b32412ad6e6cc6fbb7d13c38df1950d3483587994dc
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://trafftec.ru/123?utm_term=krups+xp2070+manual PDF link annotation
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/sumadolewe-goganipodit.pdfIn PDF document text
    • https://patokepejiven.weebly.com/uploads/1/3/4/7/134706466/tirasofenemiwaliz.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/1cdf83c8-709d-4dcc-af03-c544c850b91f/sudubitapakujidujonedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4283635c-8779-43bc-bd75-e3532c797307/38513354914.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc791041a9b7f6479384afc/t/5fcdf0b8d336b863f0e611c5/1607332029209/22401927973.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/3724022949.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/journal_citation_reports_thomson_reuters_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/23128453670.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/93482455349.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71f3ea8e-2569-41c3-adbf-0b274544e217/39997328887.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/wuvisaxodidujuxoxoxazez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bcf4f4d-ab5b-4cc0-bd6a-ee6536b3cae6/18366743743.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/58433977904.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14748c89e1c4b8fc0f61a/t/5fc441fdf81c9a2a0c2969c5/1606697470188/la_luna_sangre_july_6th.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aceb1f40-1328-482a-94e0-8ea74b12b6e4/fitch_high_school_ohio.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/70806554125.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 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC34F 5356 bytes
SHA-256: aa235837374fd6cf2ea292e05e9120d7e4c3c10986e64554fb2401853a96f35d
font_01_sfnt_off0000d578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD578 11016 bytes
SHA-256: f31fd2894b67032561292359f40a3929abeecd2fc8ee5ef32143ea3c19d79609

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