Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bde59ff08577861…

MALICIOUS

PDF

37.1 KB Created: 2020-05-07 00:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8013356cb5da49e3c5acfd3cdf51f633 SHA-1: d87837b497ecae2fdfe232b18e64a16806c388e6 SHA-256: 4bde59ff08577861b6f482f723a6fb55852ab431fb7d8bcad1492c24927dfb09
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which are dynamically generated and point to seemingly unrelated domains. This behavior is indicative of a link farm or SEO manipulation tactic, potentially used to host malicious content or phishing pages. The document body, though heavily obfuscated, contains references to health guidelines and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. No scripts were extracted, limiting the analysis of direct payload execution.

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://peakperformancfeedproducts.com/uploads/1/3/0/2/130289736/130289736.html#american+heart+association+dietary+cholesterol+guidelines
    • http://sammendez.com/uploads/1/3/0/8/130874091/fafadizewodezep.pdf
    • http://leanclube.com/uploads/1/3/0/4/130488851/781606.pdf
    • http://sjwtears.com/uploads/1/3/0/2/130270872/jazixoxaxegewep.pdf
    • http://jennifercoleartglass.com/uploads/1/3/0/4/130489019/4132364.pdf
    • http://georgiaelections.org/uploads/1/3/0/3/130313089/4729312.pdf
    • http://seanmetivier.com/uploads/1/3/0/2/130271077/gadibapetabib_sakepu_paxeje_kopujoselax.pdf
    • http://aenea.us/uploads/1/3/0/5/130551363/ruvogukapiremo-fuxaja-diteninip-bojexib.pdf
    • http://111-ed.com/uploads/1/3/0/7/130775660/5618121.pdf
    • http://peopleoptimised.com/uploads/1/3/0/6/130604391/liviwunexivuvanorep.pdf
    • http://georgiaelections.org/uploads/1/3/0/3/130313089/4729312
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • 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_off00006594.bin
bcfbd1d7ee7a625b98af5bddb3e1af15287ee04e673724bac1b7311071a6ee61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6594 10600 bytes

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