Malicious PDF — malware analysis report

Static analysis result for SHA-256 53f13b051e78fa6c…

MALICIOUS

PDF

38.3 KB Created: 2020-04-03 15:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 50bdc8f9a57e0a675314b446ffd48cb6 SHA-1: b7e6e79dd9550021836316d5b82db5330d83bec5 SHA-256: 53f13b051e78fa6ca4a5d30522fd5b4922fd16c3544c694383630ec99ac2c095
62 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 point to PDF files on unrelated domains, indicating a link farm or redirection scheme. The document body text, though partially corrupted, includes a URL that appears to be a lure for a book summary, which in turn links to another PDF. This suggests a social engineering tactic to drive traffic to potentially malicious content.

Heuristics 3

  • 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
  • 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://theroom.events/uploads/1/3/0/6/130621019/130621019.html#the+white+princess+book+summary
    • http://milablooms.com/uploads/1/3/0/6/130639911/9111058.pdf
    • http://walkonconsulting.com/uploads/1/3/0/7/130775431/ef117c9fa6a.pdf
    • http://commercialautogroup.com/uploads/1/3/0/4/130435601/defuza.pdf
    • http://lotusblvck.com/uploads/1/3/0/6/130639379/2180753.pdf
    • http://benchmark-llc.com/uploads/1/3/0/4/130488175/tatevokafi_derojupisexelo_bixuk_guvuzo.pdf
    • http://jtopmusic.com/uploads/1/3/0/7/130775489/nasubikamobolonifi.pdf
    • http://campparkbasketball.com/uploads/1/3/0/6/130622022/jugalulurage-dibonufesasu.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_off00006ba9.bin
681c5ea14483449d7c12989dd79112aa0b00fcddcc384f40c30930bf7da88f15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA9 8344 bytes

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