Malicious PDF — malware analysis report

Static analysis result for SHA-256 39608c2443dc5547…

MALICIOUS

PDF

37.0 KB Created: 2020-03-30 08:40:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 437bdfe0a7d09205f3a6141d47c10e1b SHA-1: bfdc18d652579f44311ae1c5d55d217468ec0f0b SHA-256: 39608c2443dc554735363cebb6337cb50ab4eabcc2e2b6c35aff6a41a471c218
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, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO spam operation. The document body includes a question about calorie counts, which is likely a lure to direct users to the embedded URLs. No scripts were extracted from this sample, and the primary malicious activity appears to be the distribution of numerous links to potentially malicious or unwanted 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://kcbevco.com/uploads/1/3/0/3/130313488/130313488.html#how+many+calories+in+nacho+fries+supreme+from+taco+bell
    • http://toonbearxb.com/uploads/1/3/0/6/130639164/ef5c56e0dd3f4.pdf
    • http://cookstown.ca/uploads/1/3/0/2/130287813/7ef9a202.pdf
    • http://hallesdumujon.com/uploads/1/3/0/4/130489162/vuxujaju.pdf
    • http://calhouncountywaspsandflies.org/uploads/1/3/0/5/130545278/6536293.pdf
    • http://robosail.org/uploads/1/3/0/5/130538866/mofilunirom.pdf
    • http://salishseaandclimatechange.com/uploads/1/3/0/7/130776322/lomaralegijirugomu.pdf
    • http://kvoambernath.com/uploads/1/3/0/6/130604547/tasilujivirubila.pdf
    • http://lifeinbatterypark.com/uploads/1/3/1/4/131406519/donavorivanifasivedu.pdf
    • http://thesuzukiacademyatrosehaven.com/uploads/1/3/0/4/130436166/pilesox.pdf
    • http://trbpictures.com/uploads/1/3/0/9/130969205/fepevenegifuba.pdf
    • http://soulartist.life/uploads/1/3/1/4/131408224/susuf_xivumimorexiza_liwevironuma.pdf
    • http://tmjasonsmith.com/uploads/1/3/0/6/130604658/saxidenuz_fosisetexuvera.pdf
    • http://thecrazycatlady.org/uploads/1/3/0/5/130539344/7378677.pdf
    • http://metroexaminer.us/uploads/1/3/0/4/130476083/pimesape_wipugegegisazaj_resibaxakiweme.pdf
    • http://klwphotography.com/uploads/1/3/0/6/130620572/4accbc9f617db8.pdf
    • http://wolfsgallery.shop/uploads/1/3/0/3/130323518/94fdd0.pdf
    • http://stonybrookantiques.com/uploads/1/3/0/5/130550882/pupip-xijobeporega-wadavezasevun-bobawekomux.pdf
    • http://playdatesforkids.com/uploads/1/3/0/4/130476649/9981673.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_off00006a58.bin
d32c5e7345ea5ffe9d766e3b6e34ac3f7369f60921ca00df9ea93f7937ff61d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A58 7020 bytes

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