Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f02fcc3b96ed27b…

MALICIOUS

PDF

45.2 KB Created: 2020-06-16 21:04:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5002ef48bc50bf03283f90a66057699f SHA-1: 3064c3a881b28b7208af6a12b750e2e3f2c2ec0b SHA-256: 6f02fcc3b96ed27b8a0c083f67f7a402701085c6111d1e158039e969755e3488
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by an ML classifier and contains a large number of external links, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains URLs that are likely intended to redirect users to malicious content or phishing sites. No scripts were extracted, but the presence of numerous external links indicates a potential for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • 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://nwheactionlearning.org/uploads/1/3/1/4/131406744/131406744.html#balancing+nuclear+equations+worksheet+answer+key
    • http://shotbuddy.titanathletics.co/uploads/1/3/0/4/130483122/45d5a58ca82f2.pdf
    • http://cprstars.org/uploads/1/3/0/3/130379407/xisebepafo.pdf
    • http://windfallpartners.net/uploads/1/3/1/4/131438163/6373057.pdf
    • http://74-123-77-178.mgwnet.com/uploads/1/3/0/9/130969811/7109906.pdf
    • http://webmail.banana-asia.com/uploads/1/3/1/4/131406784/fuxojetiniv_zabexexise.pdf
    • http://hostmaster.shamrockbusinesscentre.com/uploads/1/3/1/6/131637063/9189677.pdf
    • http://lcrconsulting.org/uploads/1/3/0/7/130740461/5640220.pdf
    • http://poubellissimerecyclagedeee.com/uploads/1/3/0/9/130969360/7003722.pdf
    • http://mail.wivowingene.be/uploads/1/3/1/4/131406153/lobajem-kokogonatos-muxipiwugusatoj-gasibifezaviz.pdf
    • http://themagicovencupcakery.com/uploads/1/3/1/6/131636881/3318689.pdf
    • http://tillyoil.online/uploads/1/2/8/7/128777173/128777173.html?html
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c5e.bin
d8a83ee297b9344b633f88d63d380239e24072e9ed595cf4d4777cebd5c1865f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5E 5376 bytes
font_01_sfnt_off00006eaa.bin
3f43e89c7e707c2b207bdcef37e2d2cea875a4405b4b0cd2eb8deea05d9e97b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAA 10512 bytes
font_02_sfnt_off000092d8.bin
e8a2a40c81204f68d188656ee186563bb41cec9665ac8bf1c139965098426a80
pdf-font-stream PDF embedded font (sfnt) at offset 0x92D8 16080 bytes