Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf52a14678b6168…

MALICIOUS

PDF

46.6 KB Created: 2020-03-07 19:18:18 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6265efab9a8fd58dff3b11c8a3bdd4ed SHA-1: 3e2f79b6a968453f35887b63d9b50a61a2795fab SHA-256: 3bf52a14678b6168439eaf0b987c95c9bcae0d0b1729288aacfdd2eeebcdddf3
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 indicates a link farm or redirection scheme, likely intended to drive traffic to malicious or ad-heavy sites. The document body itself is heavily obfuscated but contains references to the external URLs, reinforcing the attack pattern.

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://mrmacbiblebook2.com/uploads/1/3/0/3/130313458/130313458.html#auricular+acupuncture+points+for+sciatica
    • http://allsportssuperpool.com/uploads/1/3/0/6/130604359/fugomebikip_muwanawalivana_kakuragaba.pdf
    • http://mindfullymolly.com/uploads/1/3/0/5/130542755/3235004.pdf
    • http://zilischasphalt.com/uploads/1/3/0/4/130435574/tivoza_sumesarikusivir_rozog_dakejitola.pdf
    • http://soterianow.com/uploads/1/3/0/7/130739116/2453049.pdf
    • http://vanquissecurityltd.com/uploads/1/3/0/5/130538818/9784485.pdf
    • http://cornerstoneinsuranceservices.com/uploads/1/3/0/7/130775647/wimilijebemevege.pdf
    • http://thirddraftlife.com/uploads/1/3/0/9/130969937/gozunuzalos-lekut-temor.pdf
    • http://www.bigolafmedia.com/uploads/1/3/0/5/130588893/3077829.pdf
    • http://roundtheclockrelay.org/uploads/1/3/0/8/130814492/fojijodig.pdf
    • http://calhouncountywaspsandflies.org/uploads/1/3/0/6/130604779/b1897a7cb.pdf
    • http://alexhallahan.com/uploads/1/3/0/6/130639393/9625028.pdf
    • http://mtbaf.com/uploads/1/3/0/3/130323110/sefofute-xetuvetadimun.pdf
    • http://createdbyrellyrel.com/uploads/1/3/0/3/130379058/6114915.pdf
    • http://f-ckprobably.com/uploads/1/3/0/6/130605421/bulobop.pdf
    • http://mnrentalhome.com/uploads/1/3/0/2/130291415/8147799.pdf
    • http://southernilwhitetails.com/uploads/1/3/0/6/130639062/3018dec9.pdf
    • http://mail.vidairkennel.com/uploads/1/3/0/4/130488666/ef81d47b8.pdf
    • http://tier1painting.com/uploads/1/3/0/4/130476162/nopudov.pdf
    • http://sidekickvsc.net/uploads/1/3/0/6/130621216/punelufepusami_mamikale_fapok_jajoximimupinuj.pdf
    • http://amplusadvecta.com/uploads/1/3/0/4/130476242/596720.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007983.bin
29cb72c5c21c3eba38227defee54dfe523c88ac13c45ff5de6889ba21b2a665a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7983 7636 bytes
font_01_sfnt_off00009722.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9722 16204 bytes

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