Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a382fa16d8122a5…

MALICIOUS

PDF

36.8 KB Created: 2020-04-09 10:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6b01af30bff367e826ef19c0ef5037db SHA-1: bc2f77869ea288625e7b1d1116c8d8610dd8ebc6 SHA-256: 3a382fa16d8122a5d19a7f77ea4b7d0a533ba62df20c135bf51892667774af2a
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 point to similarly structured URLs on different domains. This behavior is indicative of a link farm or SEO manipulation tactic, often used to distribute malicious content or phishing pages. The document body itself contains a reference to 'Transformar decimal periodico a fraccion calculadora', which appears to be a lure to encourage clicks on the embedded links.

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://amazonusedapplianceparts.com/uploads/1/3/0/3/130323251/130323251.html#transformar+decimal+periodico+a+fraccion+calculadora
    • http://saugusstrong5k.com/uploads/1/3/0/5/130545260/6281785.pdf
    • http://hellothere2020.com/uploads/1/3/0/6/130604962/909e5.pdf
    • http://morganwesterbeck.com/uploads/1/3/0/2/130288510/6645877.pdf
    • http://donfranciscocigarstoo.com/uploads/1/3/0/9/130968931/63e87afe4ba.pdf
    • http://jcgnews.com/uploads/1/3/1/0/131070520/bbac9d.pdf
    • http://valueawakenings.com/uploads/1/3/0/4/130483244/turumof-poxebaxusaja-zujogowaruvomix.pdf
    • http://stehlingwalker.com/uploads/1/3/0/5/130588363/3317047.pdf
    • http://jcbuildingservicesltd.com/uploads/1/3/0/5/130590126/2900674.pdf
    • http://allsteelbuilders.net/uploads/1/3/1/4/131407571/5ea75a3e.pdf
    • http://safedirectionfirearmstraining.com/uploads/1/3/0/8/130814337/a3351eb0df5af.pdf
    • http://yesterdayskitchen.com/uploads/1/3/0/6/130620964/379e4705a7.pdf
    • http://jayshearingcenterlb.com/uploads/1/3/0/6/130621432/vadabaviwu.pdf
    • http://losangelesbuscharter.com/uploads/1/3/0/7/130739696/03399.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_off000065c3.bin
358ffde86ea4321a87784b9c2672e624caa4364afc97a3d4046fb5c67fbe88fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C3 8488 bytes

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