Malicious PDF — malware analysis report

Static analysis result for SHA-256 f294e1a8bbf6ff2b…

MALICIOUS

PDF

34.1 KB Created: 2020-05-26 06:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3881c1653d80c47847a05e42a10cd2d SHA-1: 11c6dba9de2647ba22c91a0cadac7eca23ee0a2f SHA-256: f294e1a8bbf6ff2bad4b6de443ed17f5335855449f0a053a6a059382c14ef8b4
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by an ML classifier as malicious. It contains a large number of external links, many of which are dynamically generated and point to various domains, suggesting a link farm or SEO manipulation tactic. The primary purpose appears to be directing users to a wide array of external websites, potentially for hosting further malicious content or for search engine ranking manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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 http://shopshesparklesbright.com/uploads/1/3/0/8/130813710/130813710.html#vintage+new+year%2527s+eve
    • http://hcclonline.com/uploads/1/3/0/8/130814581/majab-rutejinax-lufakeguk.pdf
    • http://dmlodge.com/uploads/1/3/0/3/130313803/6869533.pdf
    • http://amios.info/uploads/1/3/1/4/131437037/fegis_bitemadoxeri_jofawowozoxa_bogosu.pdf
    • http://ninaceledonio.com/uploads/1/3/1/0/131070342/d19687f92.pdf
    • http://admin.themacadamiashop.com/uploads/1/3/1/4/131438583/5691412.pdf
    • http://vendome-international.com/uploads/1/3/0/2/130289185/lugegatuta.pdf
    • http://endallpacs.org/uploads/1/3/1/3/131379503/xofipidufote.pdf
    • http://collegechickscleaning.com/uploads/1/3/0/4/130491356/0984d.pdf
    • http://charleshoustonfoundation.org/uploads/1/3/0/8/130874671/dazipujozefetel.pdf
    • http://escalloniajewellerycrookhaven.com/uploads/1/3/0/9/130969834/c18580277b90f.pdf
    • http://1vh.undesirable.us/uploads/1/3/0/6/130620470/5992522.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b36.bin
35d24cfd2e66350224d24fe15607cc795fa407823f10d837084d4deec231ab48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B36 10012 bytes

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