Malicious PDF — malware analysis report

Static analysis result for SHA-256 a264aafc16deb237…

MALICIOUS

PDF

47.7 KB Created: 2020-08-18 17:33:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed56d8355936f4cce236893b8d0aa20c SHA-1: c41f25facc49d0a28adf1c875b1b961b6d17dd29 SHA-256: a264aafc16deb2377f97a7f083621fb37b7a5c5096933627f808d3c2e7897eb9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a direct link to a redirector service, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.com/pify?keyword=kawasaki+er6n+2014+service+manual, which is likely used to redirect the user to a malicious site. The document body, though heavily corrupted, contains text suggesting it is masquerading as a service manual to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.com/pify?keyword=kawasaki+er6n+2014+service+manual
    • http://files.danceinfinity8.com/uploads/1/3/1/3/131398246/dowuwinefopekej.pdf
    • http://files.whisperwindaussies.com/uploads/1/3/0/7/130739532/8877752.pdf
    • http://files.townscapepaintings.com/uploads/1/3/1/4/131406234/sogososolatemokijuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/zetabukejofowokule.pdf
    • https://cdn.shopify.com/s/files/1/0435/2881/4741/files/10571501796.pdf
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/dimeluromodaruvifol.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/28084647218.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/jadeketalesul.pdf
    • https://cdn.shopify.com/s/files/1/0435/4582/1338/files/73913393460.pdf
    • https://cdn.shopify.com/s/files/1/0433/5032/7454/files/62077706201.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/gol_luigi_garlando.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fc8.bin
f267495ce285256e618ae4e1019de638c07d9c233d795f26ecfdaeda377236b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC8 5388 bytes
font_01_sfnt_off00006217.bin
fe02ab9a15344630467dace4686fa1e68dc402a12e8f26a169f9365ddf621c11
pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 14388 bytes
font_02_sfnt_off00008e8c.bin
4935603ab55f76872287563a9769dd1c174124dacc281fee03fb2e864e4c444f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8C 16144 bytes
font_03_sfnt_off0000a394.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA394 4324 bytes