Malicious PDF — malware analysis report

Static analysis result for SHA-256 485f50b24fe478b7…

MALICIOUS

PDF

42.8 KB Created: 2020-03-10 10:28:07 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: afd754471442d552ed406d1d9dbfc0e4 SHA-1: f37156ecab17d0e9a089ffef5302edc92fa8ba54 SHA-256: 485f50b24fe478b7469cfb723817ff04a0ab90c484df695119c8b151c95feba0
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO spam tactic. The document body, though partially corrupted, contains text related to 'Terapi anemia aplastik pdf' and references the wkhtmltopdf tool, indicating it was likely generated programmatically to appear as a medical document. The primary intent appears to be directing users to a network of suspicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ruben-moss.pleasingfood.com/uploads/1/3/0/3/130323124/130323124.html#terapi+anemia+aplastik+pdf
    • http://ckmanalytics.net/uploads/1/3/0/5/130547659/fovitupu.pdf
    • http://tashyphotography.com/uploads/1/3/0/5/130544652/sajevunanor_kaxot.pdf
    • http://retreatinsider.com/uploads/1/3/0/6/130621032/5f360dd28.pdf
    • http://aventinaracing.com/uploads/1/3/0/3/130323159/9777850.pdf
    • http://biggunsunited.com/uploads/1/3/0/5/130551154/livoxulinupopago.pdf
    • http://yasinrahim.com/uploads/1/3/0/6/130620731/magupirojilot-lisutoxatigexa-fubepizozivajej-mokunagud.pdf
    • http://flatlandtrailrunner.com/uploads/1/3/0/4/130478438/4780731.pdf
    • http://www.thomas-mitchell.com/uploads/1/3/0/6/130639426/rujezasudejod-toxejoj.pdf
    • http://dizacflowers.co.nz/uploads/1/3/0/7/130739463/3078823.pdf
    • http://valueaim.com/uploads/1/3/0/5/130541641/fetebu.pdf
    • http://jllcapitalmarkets30northlasalle.com/uploads/1/3/0/8/130814065/fefuvamaj.pdf
    • http://tribelle.ca/uploads/1/3/0/6/130640214/2289664.pdf
    • http://deannaheathrealty.com/uploads/1/3/0/5/130543787/mujumopunodamib-sivudusavobovoj-tujarumagigodak-vufal.pdf
    • http://juliecohnart.com/uploads/1/3/0/2/130291922/fudibutabesaroxafij.pdf
    • http://www.aic-corp.net/uploads/1/3/0/2/130272851/08732477ba7c.pdf
    • http://fatsom.com/uploads/1/3/0/3/130313671/pofunibasanoji.pdf
    • http://uclagsa.org/uploads/1/3/0/9/130969623/lapanexomofasek-damova-zufitalijozuge-gegewobelewavum.pdf
    • http://nevernecovington.studio/uploads/1/3/0/3/130313176/lipupi.pdf
    • http://www.ninisbakery.com/uploads/1/3/0/4/130436337/lemuzeme.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_off00007f37.bin
dc0fbbd6ba517410f0b0e23ee7b1a9e3a9b1f02fdf362c34cacadb9e5f668c39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F37 7904 bytes

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