Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0a8fdb08de857c…

MALICIOUS

PDF

41.7 KB Created: 2020-03-24 18:39:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 849ff884dae4ebc62ece7d2ae13b7548 SHA-1: 876bda38d39dbc5585043d88ac544dd0464b16c1 SHA-256: 1c0a8fdb08de857c293ce2caf6fdadae3d5c8c7e6677b116cb0b9e17d2793456
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, many of which follow a pattern of numeric or book slugs, suggesting a link farm for SEO manipulation or to host malicious content. The document body, though partially corrupted, contains text related to programming and the wkhtmltopdf tool, which could be used to disguise the malicious intent. The primary attack pattern involves directing users to a network of suspicious URLs, likely for phishing or malware distribution.

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://lancasterec.com/uploads/1/3/0/5/130543020/130543020.html#how+to+program+genie+intellicode
    • http://cloud9dental.net/uploads/1/3/0/6/130621412/717ac64c8f13f.pdf
    • http://reorganizeconsulting.com/uploads/1/3/0/6/130621642/909d5f1749145.pdf
    • http://riveflowyoga.com/uploads/1/3/0/2/130289724/59ee7eabe4c70.pdf
    • http://www.fluidaestheticsart.com/uploads/1/3/0/5/130550762/86c8922574d.pdf
    • http://mikaelalong.com/uploads/1/3/1/0/131070559/gurekesapejuvi_welewa_bogorebobo_zinefomonopowo.pdf
    • http://loveworthsharing.net/uploads/1/3/0/7/130739897/1897290.pdf
    • http://indigoholistichealthcarecenter.com/uploads/1/3/0/5/130590654/dijawawus.pdf
    • http://bestdigitech.com/uploads/1/3/0/9/130969980/sukutadokabote_wazos_wozefimoveri_tolukexig.pdf
    • http://mcncgop.org/uploads/1/3/0/2/130273573/ripaxe_xufexo_temitameledapal.pdf
    • http://bestofthewestmoving.com/uploads/1/3/0/2/130272477/de102.pdf
    • http://ciresemendolia.com/uploads/1/3/0/3/130323213/0a750f.pdf
    • http://mccormickreliance.com/uploads/1/3/0/8/130874165/nozolefo.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_off00007bb8.bin
72141a588ada9d0e7a9c658bfed1645f443a0c88e2ba945d5014d672b7998800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB8 7732 bytes

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