Malicious PDF — malware analysis report

Static analysis result for SHA-256 68610bada54667d5…

MALICIOUS

PDF

44.8 KB Created: 2020-08-28 01:23:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04ae08682bab55d0336d704a3f7fa457 SHA-1: d5638f4db72ebbe2700cf408606080cd4bf2b989 SHA-256: 68610bada54667d5453663526aca1b48b8d40c1db4b3916980b08a8fea6e8d15
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure to a malicious site. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful content.

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=alpiste+lactancia+materna+unicef
    • http://files.demchakmichael.org/uploads/1/3/1/4/131452735/7807214.pdf
    • http://files.ocwino.com/uploads/1/3/0/8/130814112/sigonesuf-woruginubasen-fukaxixexezadax-zemagejajor.pdf
    • http://files.kamalmus.com/uploads/1/3/1/3/131380341/2667526.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7574/7483/files/community_worksheets_for_preschool.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6176/files/voki_create_your_own_avatar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zimupumunilojoduwa.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/playboy_magazine_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/5286/6463/files/anemia_slideshare.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/the_chronicles_of_exandria_the_tale.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3899/files/20491870155.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6731/files/nogamuv.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071bd.bin
f6a9471931ca454676d051c3c0f470972da44d6a42d77b030f8ac0ef0b7d8a72
pdf-font-stream PDF embedded font (sfnt) at offset 0x71BD 5152 bytes
font_01_sfnt_off00008323.bin
2104ddf5bb47c8ade806050b95e225199666ed2496f188533f7fd0404fbb54cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8323 10468 bytes