Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3797886f39973b0…

MALICIOUS

PDF

51.7 KB Created: 2020-04-14 06:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9bd3244bff9d08352af32ade1305c837 SHA-1: 869b62006cda4f3a26116015921d62bf35a1ad20 SHA-256: c3797886f39973b07265fad910c888a41facaa54226988cd0a995bacae66c55b
92 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, a technique commonly used to create link farms for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The presence of numerous URLs pointing to various domains, many with similar path structures, suggests a coordinated effort to distribute or host malicious content.

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://pete-jeannette.com/uploads/1/3/0/4/130476183/130476183.html#junit+reporter+cypress
    • http://lukeforwoodson.com/uploads/1/3/1/3/131380470/3153018.pdf
    • http://sheabuttersmoothiesstore.com/uploads/1/3/0/4/130483626/lafux-xonosozuwu.pdf
    • http://409parkviewway.com/uploads/1/3/0/4/130476048/5546570.pdf
    • http://sfbayreader.com/uploads/1/3/0/7/130774993/vudakugokak_rezutadapiwaja_lijavinut.pdf
    • http://nordiceugenics.com/uploads/1/3/0/7/130776368/36ef1bb.pdf
    • http://naildbykk.com/uploads/1/3/1/0/131069887/2107928.pdf
    • http://villageyouth.net/uploads/1/3/0/6/130622036/2675096.pdf
    • http://earthyfind.com/uploads/1/3/0/8/130873782/96db2d247.pdf
    • http://ponderosagundogs.com/uploads/1/3/0/7/130738620/lujisadoxobiti-susuju-gajajitaw.pdf
    • http://entrepreneurgeneral.org/uploads/1/3/0/5/130550778/zabodevuwuvewaw_kuwamekakiviner_kirewex.pdf
    • http://modish-media.com/uploads/1/3/0/5/130539325/tefulutomivibanazasa.pdf
    • http://satisfyingthingsmm.com/uploads/1/3/1/4/131452794/2249218.pdf
    • http://picazosinteriorscaping.com/uploads/1/3/0/7/130775665/zemol-wopudas-fowag.pdf
    • http://stonefieldcottage.com/uploads/1/3/0/7/130776757/poxaf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008055.bin
3a067503699674a58af8588e152c8fd4747603045026499ede5ed26fc9175f57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8055 8688 bytes
font_01_sfnt_off0000a1d6.bin
bec15e2d9ca53898c02b08f7bc23975a08f1fb71e8b5cbdf70954179228b7a29		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1D6 3008 bytes
font_02_sfnt_off0000ac45.bin
62297a5d81126744d72075fbb35130a4ba211925527e4cecbf6d970ce34f69fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC45 16148 bytes

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