Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce984ed9b0a27da7…

MALICIOUS

PDF

29.5 KB Created: 2020-04-04 11:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 42af28c8736cfee3bf8d03af6bf6b216 SHA-1: aaca156bbd93e35abc746fe4b814924612985cdb SHA-256: ce984ed9b0a27da792a0c4ecee21c6574e65b2b5c2be0c195d51645c192c707b
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on unrelated domains and appear to be part of a link farm. The document body mentions 'Discrete mathematics and its applications 6th solution manual pdf', suggesting a lure to attract users searching for academic materials. The primary intent appears to be driving traffic to these external sites, likely for SEO manipulation or to host further 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://keatingphysicaltherapy.net/uploads/1/3/1/4/131438142/131438142.html#discrete+mathematics+and+its+applications+6th+solution+manual+pdf
    • http://alloutvbc.com/uploads/1/3/0/7/130775321/db74311.pdf
    • http://www.formaquattro.com/uploads/1/3/1/3/131381919/tirixof.pdf
    • http://valoremplus.com/uploads/1/3/0/7/130775545/6233be1d2d670.pdf
    • http://head2toebeautysupply.com/uploads/1/3/0/7/130739240/majelewotid.pdf
    • http://excavate-haul.com/uploads/1/3/0/4/130489351/rijajo.pdf
    • http://greaterindyretiredista.org/uploads/1/3/0/5/130551046/4815728.pdf
    • http://sjoqvistskor.com/uploads/1/3/0/7/130740138/rowewegizumixisakil.pdf
    • http://oliviajohnsonyoga.com/uploads/1/3/0/7/130776730/8328814.pdf
    • http://cincinnatibookkeepers.com/uploads/1/3/0/7/130739536/sanumezufele.pdf
    • http://mygirlsevents.com/uploads/1/3/0/5/130539243/8279642.pdf
    • http://elquetzalspanish.com/uploads/1/3/1/0/131070487/lobupikabef-sexot.pdf
    • http://magicaladventurestravelbystacy.com/uploads/1/3/0/4/130489157/rajunuwap.pdf
    • http://bindingsandgrounds.com/uploads/1/3/0/3/130379426/delovobuzebus.pdf
    • http://stsimonsequestriancenter.com/uploads/1/3/1/3/131398054/86444.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_off00005141.bin
97b7519b88b83e6b375a659e79f21670313ac3cf46cecab6ae1f6984b82886ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5141 5820 bytes

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