Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb1f3c683e1519f…

MALICIOUS

PDF

48.3 KB Created: 2020-08-14 16:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40b600a3599868218f474981481c907f SHA-1: c865d4eb94494236948c8b8a1a526c2bc0d86ba3 SHA-256: edb1f3c683e1519f18720e621856ad5e1ee3d663a9666d9726536bebc8b6f048
128 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and a large number of external links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect users to malicious content. No specific malware family was identified.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/pify?keyword=cara++gta+5+mod+zombie
    • http://diset.presscourier.org/uploads/1/3/2/7/132741593/voxuliluto.pdf
    • http://tadexuk.melindayoungmd.com/uploads/1/3/0/7/130775403/dodebu-zurelalop.pdf
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/vocabulary_words_with_meaning_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/togujo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7873/7302/files/dabukadukava.pdf
    • https://cdn.shopify.com/s/files/1/0433/9345/0134/files/islamic_calendar_2020_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/2188084648.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/20202147219.pdf
    • https://cdn.shopify.com/s/files/1/0431/0922/0501/files/71527684953.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/zagenaxijadenewidusodat.pdf
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/xojamubetewuw.pdf
    • https://cdn.shopify.com/s/files/1/0445/6503/7220/files/itunes_for_windows_vista.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/tulovinabetup.pdf
    • https://cdn.shopify.com/s/files/1/0432/3681/9104/files/abbyy_transformer_3_crack.pdf
    • https://cdn.shopify.com/s/files/1/0436/8426/6137/files/connectors_in_computer.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_off000069ce.bin
eb9bf623ce89d17d3dad77f1ab9420f52f0079cdec7c1e141f38015e6fbbdb3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x69CE 5152 bytes
font_01_sfnt_off00007b4b.bin
678f2d21302f4f240db432e20ad14b2eef7f6e14ad29ea0741d5a4fa92893bde
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4B 10240 bytes
font_02_sfnt_off00009e8e.bin
531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E8E 16312 bytes