Malicious PDF — malware analysis report

Static analysis result for SHA-256 196dfc19c3036541…

MALICIOUS

PDF

69.4 KB Created: 2020-04-05 03:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 71cb426fd02271b5b5b02283a6d67a2a SHA-1: 51f0f13c643c9951ca6dba189ecb9ba1c54538b4 SHA-256: 196dfc19c3036541c9416f23f410e0d8169ce17477877bcdcc721b274392ea9d
136 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are structured as PDF files with numeric slugs, indicative of a link farm. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's content is designed to trick users into believing they are entitled to a prize or funds, requiring them to pay a fee or provide information for delivery. The embedded URL points to a page that appears to be a lure for this scam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://copperlinefarm.com/uploads/1/3/0/9/130969742/130969742.html#argumentative+essay+good+introduction
    • http://rodonnellcookbook.com/uploads/1/3/0/7/130740412/darasobojuduviregel.pdf
    • http://martoranamedia.com/uploads/1/3/0/5/130539279/ce4b46768.pdf
    • http://coastalequipmentsalesco.com/uploads/1/3/1/1/131163930/bogalazeborofam.pdf
    • http://joshuamatthewphillips.com/uploads/1/3/0/5/130541351/zibogekojav.pdf
    • http://wildtwilight.ca/uploads/1/3/1/4/131407494/2638374a64.pdf
    • http://kylgbtqyouth.org/uploads/1/3/1/0/131071073/f83384fbadc0.pdf
    • http://digitalgypsi.com/uploads/1/3/0/7/130776728/sutedenimijelutug.pdf
    • http://thechickencouple.com/uploads/1/3/1/0/131070538/133af.pdf
    • http://vesi-noba6.com/uploads/1/3/1/0/131069763/4941068.pdf
    • http://primadonnaprincess.com/uploads/1/3/0/6/130621954/8c02bd84652.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_off0000e97f.bin
35659480be07aadf7af34abb25fb4c8a1d20fc388290c38f4e4d7c665b0133f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE97F 8016 bytes

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