Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ff2e4c2807c8296…

MALICIOUS

PDF

35.8 KB Created: 2020-06-24 06:47:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02118eb8a3efaae8d2ecd9dee7776dd1 SHA-1: d7aa7328f578774e2ff11d63cb1acd9c4ddc7a7a SHA-256: 0ff2e4c2807c82967722bad47408ee1615782bfa5d5323d6da9a51327712c3ac
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to similarly structured URLs, suggesting a link farm or SEO abuse tactic. The document body, though obfuscated, contains the title "Typhoon activity worksheet" and references to URLs, indicating a lure to external content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links supports a malicious intent, likely to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://patriotremodelingllc.com/uploads/1/3/1/3/131383426/131383426.html#typhoon+activity+worksheet
    • http://rasooldiaz.com/uploads/1/3/0/6/130639269/584ba5.pdf
    • http://alternateposition.com/uploads/1/3/0/6/130621455/todajetigixod.pdf
    • http://nicolashaircuttingseminars.com/uploads/1/3/0/7/130775429/zarilisa.pdf
    • http://betrecordings.com/uploads/1/3/0/5/130544318/xuvodatudep.pdf
    • http://mx.busyboysubs.com/uploads/1/3/0/4/130490019/5314214.pdf
    • http://kearnsprize.com/uploads/1/3/0/8/130874169/3472022.pdf
    • http://chateauneufdupapewineclub.net/uploads/1/3/0/2/130288579/zobuwabilonebi.pdf
    • http://totcetrebuie.com/uploads/1/3/0/6/130620795/pawobemiko-takuwudewikiw-luwoze-rumuwufutixiges.pdf
    • http://webmail.gflex-sanedia.com/uploads/1/3/1/4/131437311/0108f4225c3b4fe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f53.bin
b2f2d74e2fdbbbfe89ef300b03c0cd9c44e12408cb5e4d697acb9fa420d503e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F53 5044 bytes
font_01_sfnt_off0000607d.bin
6ccc1a6b92153df04d5dec19b82fbe5d83ca7f95b4e17e4394ffa1cafc690a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607D 10348 bytes

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