Malicious PDF — malware analysis report

Static analysis result for SHA-256 49a82dacb2b87ea4…

MALICIOUS

PDF

33.8 KB Created: 2020-04-25 08:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1104526b24c88b094399f0c65cee8d7f SHA-1: 8adabffab9e2e8ab69739b0a19b1969d54dfd58f SHA-256: 49a82dacb2b87ea498c3dc05e06a2e32b9f6de695ad04c2d7959bd38cbb99bc4
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named PDFs hosted on various domains. The document body mentions 'Proform j8 treadmill belt replacement', suggesting a lure to attract clicks. The PDF_SEO_LINK_FARM heuristic indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to distribute malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://newjerseyhomebuyerseminar.com/uploads/1/3/1/4/131410870/131410870.html#proform+j8+treadmill+belt+replacement
    • http://suburbanwoodsman.com/uploads/1/3/0/8/130874058/fabotaxudagevaf.pdf
    • http://woodandhook.com/uploads/1/3/1/3/131381497/lumademuvelizuw.pdf
    • http://engravedshot.com/uploads/1/3/0/9/130969241/02cf3e5e517da6.pdf
    • http://eyecandyeyelashes.com/uploads/1/3/1/4/131453969/foporakakanosul.pdf
    • http://simplyfloral.ca/uploads/1/3/0/5/130590241/riwebumilewa.pdf
    • http://simonshirazi.com/uploads/1/3/0/5/130539129/748ef702b.pdf
    • http://suburbanwoodsman.com/uploads/1/3/0/8/
    • 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_off00005a72.bin
7c738653a70a39ee31c6e0815ab51abf50262f45eddf00954ef3444a59d54357		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A72 8612 bytes

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