Malicious PDF — malware analysis report

Static analysis result for SHA-256 246eb00b20b26dce…

MALICIOUS

PDF

40.1 KB Created: 2020-08-09 06:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61f86e1b8cf3fa1a7babfff014c61879 SHA-1: 77dfe8b321e96160392c4a095c83bda6a705e2ec SHA-256: 246eb00b20b26dce3ad4f15b70b5bf0b77af84f7307dfc5a5e126bbf50283a9e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, a common tactic for SEO poisoning or redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector, `https://ttraff.cc/pify?keyword=employment+form+pdf`, which is likely intended to deliver a payload or phish for credentials. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of many links to Shopify-hosted PDFs suggests an attempt to blend in with legitimate content while distributing the malicious redirector.

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.cc/pify?keyword=employment+form+pdf
    • http://medituno.luckytransformationcenter.com/uploads/1/3/1/4/131407995/vopuxetev.pdf
    • http://files.adventmoravianbethlehem.org/uploads/1/3/1/4/131406945/08a9ff8.pdf
    • http://files.stjosephmusic.org/uploads/1/3/1/1/131164552/7bfd8f5.pdf
    • https://cdn.shopify.com/s/files/1/0432/3187/1139/files/90437391812.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/19363567307.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/barogekuduxutix.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/rerazonem.pdf
    • https://cdn.shopify.com/s/files/1/0434/6245/9544/files/jozoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4666/6389/files/ashoka_history_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7873/8335/files/16534948788.pdf
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/86073654753.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1800/files/intelligence_bureau_2016_exam_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/62547103658.pdf
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/rezizibiwirexowug.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006072.bin
1365800740f3e5ac099800a5a318fe30c35a9e37f6d64892908e0d8c9a072193
pdf-font-stream PDF embedded font (sfnt) at offset 0x6072 4856 bytes
font_01_sfnt_off000070ed.bin
c1a4864618770d05ce787aebeaf0fcf8872a82c963fea6addeec0f533904234c
pdf-font-stream PDF embedded font (sfnt) at offset 0x70ED 10264 bytes