Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff3bbcac2903a63a…

MALICIOUS

PDF

56.1 KB Created: 2020-08-09 18:40:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7518d0a4f8bfe1d38b811bde77e1e80c SHA-1: db4b2a55ad4ab6987a5edbd4a991b10c41fcbd6c SHA-256: ff3bbcac2903a63a18dc62c54eb954f7ccaf13894697d4fa6d51ef9b9432ccbe
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=arterial+blood+gas+interpretation+made+easy+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0429/7211/9199/files/vuxolamoforonavawe.pdf'. The document body, though heavily obfuscated, contains these URLs, suggesting the primary intent is to redirect the user to malicious content.

Heuristics 3

  • 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 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.ru/pify?keyword=arterial+blood+gas+interpretation+made+easy+pdf
    • http://files.vbsmontecarlo.com/uploads/1/3/0/7/130739154/parow-wajuwojibapasek-lekirasugagufum-ledajifujemuf.pdf
    • http://files.flickcoaching.com/uploads/1/3/1/1/131164308/8413577.pdf
    • http://files.sjraise.org/uploads/1/3/1/4/131452878/ritorevovafufux-xutokegaperolu-letamixix-luwov.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/vuxolamoforonavawe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/6533160780.pdf
    • https://cdn.shopify.com/s/files/1/0438/9352/2587/files/rusemidikuwojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/gerumisuli.pdf
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/xixeraxunutazirorijive.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/34597878338.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/ladijoji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/91096294462.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/html_to_javascript_jsfiddle.pdf
    • https://cdn.shopify.com/s/files/1/0430/1373/4563/files/bella_s_lullaby_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/marcus_aurelius_meditations_english.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_off00008582.bin
26cd4b7c216739b2855cf77b0882590b680568829e9e0af8426bb36846f61eed
pdf-font-stream PDF embedded font (sfnt) at offset 0x8582 3184 bytes
font_01_sfnt_off000090d7.bin
b9f5f78398c49d19972006c99434b61a7218caa11587e45acc91e103b30a0d55
pdf-font-stream PDF embedded font (sfnt) at offset 0x90D7 5592 bytes
font_02_sfnt_off0000a3c7.bin
a4fac698f5265b0caf92ff97595acf7cb67c767a457e038d1615c3f95ad1236f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C7 14900 bytes