Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0ef7c63b5ba76f…

MALICIOUS

PDF

38.0 KB Created: 2020-04-28 18:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5f06bfa8ac2be46ed15d0fc7890ab051 SHA-1: b38ff6b044ba0bfc287c5bd8b3c4b7dcb507ddbb SHA-256: 1c0ef7c63b5ba76f585f66dd101775a8e8156d19926002c914f04a391b28d5c2
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named PDFs hosted on various domains. The document body text explicitly mentions 'Free wifi calling app for android phones', suggesting a lure to trick users into clicking these links. The heuristic 'PDF_SEO_LINK_FARM' indicates a pattern of creating numerous links to potentially malicious or spam content. No scripts were extracted from this sample.

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://kalajarvenlomakyla.fi/uploads/1/3/0/5/130540746/130540746.html#free+wifi+calling+app+for+android+phones
    • http://newlifecentrechurch.ca/uploads/1/3/0/4/130477346/41af518900.pdf
    • http://butterflygift.art/uploads/1/3/0/4/130477135/mirijave.pdf
    • http://acefinancialinvesting.com/uploads/1/3/0/4/130435569/xutegibenojore-jalibufolav-fepelazexetap.pdf
    • http://aicegladiators.com/uploads/1/3/0/4/130476572/e6d39dda944a2.pdf
    • http://deecegroup.com/uploads/1/3/0/6/130603994/tadowipeta_virulufatorow.pdf
    • http://reconnecting-families.com/uploads/1/3/0/6/130605516/rurem.pdf
    • http://bloomiescott.com/uploads/1/3/1/4/131483371/sisum_pazamabajozuvu_mazoxo.pdf
    • http://geraldvirtbauer.ch/uploads/1/3/1/4/131483061/fepek_rinomunelenoku_movokoxa_lexewedan.pdf
    • http://joyofphysics.com/uploads/1/3/0/2/130270762/sewezobekitine.pdf
    • http://podosekconstruction.com/uploads/1/3/1/4/131452904/9179956.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_off00006cd5.bin
1af43ba1eb11697bea0c1359a0577d2feede8cd19aa76ed6cb5cde78ade98211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD5 8116 bytes

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