Malicious PDF — malware analysis report

Static analysis result for SHA-256 80076d8a960bb293…

MALICIOUS

PDF

37.1 KB Created: 2020-04-01 19:08:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 771a9056c67d2bb8f825fd4628c5d199 SHA-1: 5ba756bb69b5cc386296872d849d9b921cab1e9a SHA-256: 80076d8a960bb293bc57940341e51be4f35f0628c5c5269eda5b5d31466aca17
62 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, a technique commonly used for SEO manipulation or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, with 'liquorjunky.com' being a dominant host. The embedded document body text, though partially corrupted, contains a URL that aligns with the observed link farm behavior. No scripts were extracted from this sample, limiting the analysis of direct payload delivery mechanisms.

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://stuch.org/uploads/1/3/0/4/130483050/130483050.html#competencias+linguisticas+en+ni%C3%B1os
    • http://liquorjunky.com/uploads/1/3/0/6/130620320/kisasivituroletubifi.pdf
    • http://shutterlyelegantphotos.com/uploads/1/3/0/6/130620266/jemomabikegu.pdf
    • http://realzinspections.com/uploads/1/3/0/9/130970022/zuzadabojefud.pdf
    • http://addorecords.com/uploads/1/3/0/4/130477201/kogusexiret.pdf
    • http://evpcs.com/uploads/1/3/0/3/130379062/606306.pdf
    • http://southernindianafolkschool.com/uploads/1/3/0/4/130488092/a6cffa.pdf
    • http://rebcohomeinspectionservices.com/uploads/1/3/0/5/130589415/4c80584fb.pdf
    • http://ethosforlife.net/uploads/1/3/0/5/130545827/rareno.pdf
    • http://fabricsoftheworld.net/uploads/1/3/0/5/130589317/bipezimim_jajase.pdf
    • http://installationsandrepairs.com/uploads/1/3/0/9/130969639/ginotef.pdf
    • http://junkremovalprosflagstaff.com/uploads/1/3/0/2/130289296/rowutezikax.pdf
    • http://bayfrontbuilding.com/uploads/1/3/0/7/130740483/piritivesotasa_bejel_xurelid_fumoveto.pdf
    • http://solidusphotography.com/uploads/1/3/0/4/130476378/bab71cf375799b.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_off000067b9.bin
2cb5102ed4c37f4951e19dabc425da5339e4f2257ea3d41e5a69e9c5fdfb185b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67B9 8116 bytes

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