Malicious PDF — malware analysis report

Static analysis result for SHA-256 8183d8cbb4031e5d…

MALICIOUS

PDF

39.0 KB Created: 2020-05-21 12:53:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b858a793f3a2ae8c9245a33034967a07 SHA-1: 684c75d48432768b68483c6b49a5a88ca8708acf SHA-256: 8183d8cbb4031e5dff45d588123d983fb4f1f5902fa78c5796ea2dc268c65d88
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a common technique for SEO poisoning or redirecting users to malicious sites. The document body, though partially obfuscated, contains URLs that appear to be part of this link farm. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the suspicious link structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://groutsanchez.com/uploads/1/3/1/3/131380688/131380688.html#what+is+acrord32.+exe
    • http://auveratech.net/uploads/1/3/0/9/130969931/kajomezevekiwa-redaladudir-detofotuzipoza.pdf
    • http://jjlmarketingsolutions.com/uploads/1/3/1/4/131406781/pesewilozidenez.pdf
    • http://cozycottagepreschool.com/uploads/1/3/1/3/131384336/458243e.pdf
    • http://josephriccio.com/uploads/1/3/1/3/131381452/d04be94b76f95d.pdf
    • http://online-personal-coach.nl/uploads/1/3/0/6/130620632/1869740.pdf
    • http://garciaweir.com/uploads/1/3/0/5/130541803/5202939.pdf
    • http://mariakalaffdesigns.com/uploads/1/3/1/3/131379530/2491707.pdf
    • http://elliehackney.com/uploads/1/3/0/7/130775435/16e999.pdf
    • http://ckpoolparlour.com/uploads/1/3/0/6/130604646/megufavivise_kijekujaxilebam_terixanozuz.pdf
    • http://thevinylhaven.com/uploads/1/3/1/4/131453214/679563.pdf
    • http://campaignartwork.com/uploads/1/3/1/4/131406710/kikulalalomupez-zefililuvol-zopifodidan-ganesajexowit.pdf
    • http://gustafmethod.com/uploads/1/3/1/8/131856594/migovojuw-buzusule.pdf
    • http://hguadolor.com/uploads/1/3/1/3/131380404/josugunovox_tiludisutilokin_somova.pdf
    • http://cheshuntteamministry.org/uploads/1/3/0/6/130603979/8104555.pdf
    • http://fashionandjesuspassion.com/uploads/1/3/1/4/131482859/6467051.pdf
    • http://comercializadora.org/uploads/1/3/0/9/130969831/e8ad96cfe5d.pdf
    • http://socializex.com/uploads/1/3/1/0/131070476/raxofefuperekuzex.pdf
    • http://thehumblemonkey.com/uploads/1/3/1/4/131407588/5952289.pdf
    • http://dqwaynesboro.com/uploads/1/3/0/4/130436224/6187607.pdf
    • http://emurphylawoffices.com/uploads/1/3/1/6/131606111/2a91d0a8d851d14.pdf
    • http://membership.expert/uploads/1/3/0/3/130323631/113261.pdf
    • http://sgfcon.com/uploads/1/3/0/8/130813921/e425b.pdf
    • http://laurencarr1.com/uploads/1/3/1/4/131411474/6462941.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_off00006c2b.bin
05c906f9700507656e244cbe79cf3115240509828c6538fbbffebe8221ba3e10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2B 10580 bytes

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