Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7a76c37872a3c9…

MALICIOUS

PDF

40.2 KB Created: 2020-06-12 08:13:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e4173e2cfb0a854cb373b3516fd3ae1 SHA-1: 7d12fba959631ede595f10ba11868934f3a852d1 SHA-256: 2f7a76c37872a3c953d5d2e3b2d7c8fdb817406124bf7acdb4488b3081b101bf
94 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO spam or phishing lures. The 'PDF_SEO_LINK_FARM' heuristic firing indicates a large number of external links, suggesting an attempt to drive traffic to potentially malicious sites. The document body, though partially corrupted, contains text related to 'Herbs and their uses pdf', likely a pretext to disguise the malicious intent of linking to external content. No scripts were extracted, but the sheer volume of external links points to a delivery mechanism focused on redirecting users.

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://lkultrasoundinnovations.com/uploads/1/3/0/5/130590717/130590717.html#herbs+and+their+uses+pdf
    • http://mail.regiosoft.be/uploads/1/3/0/7/130776341/1977211.pdf
    • http://tigertechrobotics.org/uploads/1/3/0/2/130291371/wobelabalifozomivuf.pdf
    • http://agapibeach-akamaiorigin.devsite-1.com/uploads/1/3/0/6/130621307/6523547.pdf
    • http://ingerlene.net/uploads/1/3/0/5/130550828/9020491.pdf
    • http://gazelleproductions.com/uploads/1/3/0/8/130874055/6ee5d07bae9dca1.pdf
    • https://sanolosu.files.wordpress.com/2020/06/19516498675.pdf
    • https://vuxumop.files.wordpress.com/2020/06/88723684222.pdf
    • https://bilivogeji390496675.files.wordpress.com/2020/06/18661078910.pdf
    • https://wojugelen.files.wordpress.com/2020/06/82452066288.pdf
    • https://wiginikinu.files.wordpress.com/2020/06/40032345859.pdf
    • https://livukux.files.wordpress.com/2020/06/74106511128.pdf
    • https://wekujepomope.files.wordpress.com/2020/06/purezabigusa.pdf
    • https://jifarilu.files.wordpress.com/2020/06/reguraxavafep.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_off000075a4.bin
342947294a8384edc0e4c0dba97a77cb2dcf632708a5da4c5fcc27a65ca648e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A4 9500 bytes

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