Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fdc6ae87f71488e…

MALICIOUS

PDF

35.4 KB Created: 2020-08-30 23:27:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0db19dbee9faa0ffff09f5df6eec1220 SHA-1: 660371e12b15f56507f270814802f620dff9a1a7 SHA-256: 5fdc6ae87f71488ee6656431efa590ac26992abe0acdac4c703690c06a655613
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One of the primary links, https://ttraff.cc/wix?keyword=ya+habib+selam+aleyke+indir, is flagged as a malicious redirector. This suggests the document is designed to funnel users through a chain of links, likely leading to malicious content or further exploitation.

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.cc/wix?keyword=ya+habib+selam+aleyke+indir
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8484/9045/files/echo-_jason_walker.pdf
    • https://cdn.shopify.com/s/files/1/0437/6366/3009/files/malaria_parasite_identification.pdf
    • https://cdn.shopify.com/s/files/1/0437/0127/2729/files/89596595654.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/backdoor_attack.pdf
    • https://cdn.shopify.com/s/files/1/0430/0996/6239/files/telapetuvilajumiji.pdf
    • https://cdn.shopify.com/s/files/1/0465/0824/5150/files/vce_exam_simulator_2._6._1_free.pdf
    • https://static.usrfiles.com/ugd/e2f197_4c1db9da20194104b8e715df21290a9a.pdf
    • https://static.usrfiles.com/ugd/930050_48d10e2a24424478a6f3a7f4ec5a8fb4.pdf
    • https://static.usrfiles.com/ugd/e3ff21_e501381f5e114b9b8d817d1a9374ba51.pdf
    • https://static.usrfiles.com/ugd/efb3f0_6ee48648ef9b4b178ea122e95392d9a8.pdf
    • https://static.usrfiles.com/ugd/3f4b99_a8e3c1064f4f4666a7023668634c34cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7cd55585e554314b7a15843aa122d0f.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_45c8dae402ef44ef9e54bf2792e68886.pdf
    • https://static.usrfiles.com/ugd/80c1db_bda6206ee2ca45de9f92bb8479c31f19.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fe4806c12d940f59fa3b05f91102399.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_off00004979.bin
b47dcea88afcfeff04b5a95db51386461f9f3e17f93c0734cfa179f3cc862d5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4979 5332 bytes
font_01_sfnt_off00005b75.bin
eceb65d4dfde64c3617f46bb1f582c7f6cb45b441a7c441263edbbb79690b368
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B75 11484 bytes