Malicious PDF — malware analysis report

Static analysis result for SHA-256 64c60a0cc25ecd54…

MALICIOUS

PDF

46.1 KB Created: 2020-04-16 14:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6927b2eeb6a726774f071ad234318168 SHA-1: d86a91198cbcf8af4f562eb21521d83f43545e9d SHA-256: 64c60a0cc25ecd549a1a5be9c4f2b31e98f5e242b83a65e224de35d0614d9f23
96 Risk Score

Malware Insights

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

The PDF contains a link farm of numerous external PDF documents, suggesting a SEO-based link manipulation tactic. The document body, though heavily obfuscated, contains a reference to a 'parking ticket template' and an embedded URL that points to a similar template, likely intended to trick the user into clicking through to a malicious site. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://andrewthompsonsongs.com/uploads/1/3/0/5/130542934/130542934.html#parking+ticket+template
    • http://hypnosis2u.com/uploads/1/3/0/2/130289467/1261424.pdf
    • http://passageandconveyance.com/uploads/1/3/0/2/130272921/3207296.pdf
    • http://businessethicspro.com/uploads/1/3/0/8/130874026/bewafo_beviw_sipamovowe.pdf
    • http://lotusliving.xyz/uploads/1/3/1/4/131483275/nedukuvib_fenuzed_nimof.pdf
    • http://popjetfountain.com/uploads/1/3/1/3/131380511/xabudoza_runirulofikoso.pdf
    • http://uptowngirlbymarguerites.com/uploads/1/3/0/9/130969449/gibixulenonivas.pdf
    • http://sagebrushprints.com/uploads/1/3/1/0/131071243/wesatajajoj-pavere.pdf
    • http://conniesheavenlyjewels.com/uploads/1/3/0/6/130639994/6462400.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_off00008cda.bin
c61dc9cbed035bedf5c41f24002446e56e9a8a8fa601589fa966c6888a05a4fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDA 7808 bytes

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