Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc500e1b539d04a…

MALICIOUS

PDF

42.9 KB Created: 2020-04-03 18:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1bc3bf53a1f5c507772b3ce88b53b7ec SHA-1: 7e6d13ff4ca926c09d6d8b53e0e3403a7081e77a SHA-256: bfc500e1b539d04a1fc2d6f9c9d2ec318981602f284e8bfbfdfe1b6873d71465
70 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 similarly structured URLs on different domains. One of these links, http://msgarletts-hancock.com/uploads/1/3/0/7/130775434/130775434.html#methods+in+behavioral+research+12th+edition+test+bank, is directly embedded in the document body. This suggests a link farm or SEO poisoning tactic designed to lure users to potentially malicious content. No scripts were extracted, and the document body itself is largely unreadable binary data with some embedded URLs.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://msgarletts-hancock.com/uploads/1/3/0/7/130775434/130775434.html#methods+in+behavioral+research+12th+edition+test+bank
    • http://balthazarcafebar.com/uploads/1/3/0/6/130620937/nakubuw-nekazegadome-mosejulovibar-napex.pdf
    • http://golivebeautiful.com/uploads/1/3/0/9/130969304/8233392.pdf
    • http://queencrossdressingacademy.com/uploads/1/3/0/5/130588425/fuwulawogader_rubisesukug_dufupedimujak_zuzozabot.pdf
    • http://andersoninsurance.org/uploads/1/3/0/5/130551556/duwuvitiwixube.pdf
    • http://shinethrive.com/uploads/1/3/1/3/131381886/41f767a354.pdf
    • http://lanprivaltdanskee.com/uploads/1/3/0/7/130739000/nubami-xajarewu-faxose.pdf
    • http://prettylittlevillas.com/uploads/1/3/0/8/130813779/metul-vujofireg.pdf
    • http://74-123-78-106.mgwnet.com/uploads/1/3/1/3/131383764/malanobireda.pdf
    • http://nexgenmanagement.org/uploads/1/3/0/4/130491418/xeguwusozitalojim.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000681e.bin
d5bec913f249617e2881455442380d6746ca3268b1a01b2181f8489eb2e804f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x681E 8564 bytes
font_01_sfnt_off000088f2.bin
8c4fbfc9d0963a792736d462eaa9ec0082b064ac4324f08fea16585fe607525d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88F2 16188 bytes

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