Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf26e82347d1e3c…

MALICIOUS

PDF

47.8 KB Created: 2020-05-15 16:27:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf563a2df07f4d879759d6d95c4aa346 SHA-1: 7881a9b6673877544cbf03bb99dd1d73abf4ac4e SHA-256: aaf26e82347d1e3c885e76f3fbbe70e3c53abe238ef6e4fa52e78b446ad37cd3
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body, though heavily obfuscated, contains references to 'Cisco ccdp arch simplified pdf' and URLs that appear to be part of a link farm designed to attract search engine traffic. This suggests a social engineering tactic to drive users to potentially malicious content hosted on these external sites.

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://gotrsummit.com/uploads/1/3/0/4/130435757/130435757.html#cisco+ccdp+arch+simplified+pdf
    • http://cesun2018.org/uploads/1/3/0/7/130776605/1153504.pdf
    • http://ryanmecheski.com/uploads/1/3/0/6/130603859/9610738.pdf
    • http://garzaoutdoors.com/uploads/1/3/0/2/130272575/jujitagi.pdf
    • http://thesweetestcouple.com/uploads/1/3/0/2/130270747/0d6d7f53e0c52.pdf
    • http://venesceramics.com/uploads/1/3/1/0/131070204/4551542.pdf
    • http://rustx.io/uploads/1/3/1/6/131606087/bosefojujewedaxoxi.pdf
    • http://happyfeetlawns.com/uploads/1/3/0/5/130551477/6518216.pdf
    • http://personalizeddietsbycarol.com/uploads/1/3/0/8/130873851/5606247.pdf
    • http://ultimateatms.com/uploads/1/3/1/3/131379268/punidi.pdf
    • http://primroseandpeony.com/uploads/1/3/0/4/130435745/453d9748.pdf
    • http://analyticstitan.com/uploads/1/3/1/8/131871910/be807.pdf
    • http://carlapan.com/uploads/1/3/0/7/130775306/loladuvam-kufujox-ximibuwe-bikopatinomawe.pdf
    • http://florenciacat.com/uploads/1/3/0/7/130739127/4709126.pdf
    • http://melbournegpstracking.com/uploads/1/3/0/5/130550834/degujarenuzujex_rezolilimapi_sezen_jafixas.pdf
    • http://andrewphamcoaching.com/uploads/1/3/0/7/130740086/mofunopujejidoteto.pdf
    • http://angelsdinerfood.com/uploads/1/3/1/6/131606173/46c664.pdf
    • http://talkupyute.com/uploads/1/3/1/4/131438024/karekavixefawul_xetoma_tujilo.pdf
    • http://mmtreeservice24.com/uploads/1/3/0/5/130543141/e60a52cd.pdf
    • http://iheartschoolcounseling.com/uploads/1/3/0/6/130621373/3482138.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_off00008d52.bin
ab9bd500af62259f94e1824e8691b62440269542cc41fe9dd97e5cb139277cce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D52 11180 bytes

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