Malicious PDF — malware analysis report

Static analysis result for SHA-256 385092aa0ebb56f9…

MALICIOUS

PDF

47.2 KB Created: 2020-08-21 06:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc1da821d7b6aba32ea3e39dfa55e1f9 SHA-1: 09eec4782bd1f0fb3b355396a15d9abf823c4769 SHA-256: 385092aa0ebb56f9f2f3f329b5ee053ca80c6079f8a324107150a77bc0078fd6
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to `ttraff.ru`, a known malicious redirector. The document body, though heavily obfuscated, contains the same redirect URL and text related to recovering deleted Android photos, suggesting a lure. The presence of a callback lure heuristic further supports a phishing or scam intent. The primary attack vector appears to be directing users to malicious infrastructure via embedded links.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=recuperare+foto+cancellate+da+android+senza+root
    • http://files.philadelphiapediatrics.org/uploads/1/3/1/4/131406518/2014884.pdf
    • http://files.unhbeelab.com/uploads/1/3/0/8/130814353/c373cf4.pdf
    • http://bepome.pathuberartwork.com/uploads/1/3/2/3/132302936/8ea85489cf.pdf
    • http://files.unhb
    • https://cdn.shopify.com/s/files/1/0431/0564/8801/files/kewivaxekarivokikirigawib.pdf
    • https://cdn.shopify.com/s/files/1/0437/6287/6565/files/66899495915.pdf
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/pemanimifelibazale.pdf
    • https://cdn.shopify.com/s/files/1/0434/1766/5701/files/cadwallon_rpg_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/balatewuvufanufunimotomaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/zufuzavapegoxunagiriwob.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/lenapade.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/venag.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/vejotoribelotebodol.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_off000078ee.bin
89e25220aaff254b59429a74a39f1d3794ebbf87a0e7da67ce6fce9d379d6ca3
pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 5204 bytes
font_01_sfnt_off00008abf.bin
47d666fe5fa3c3e55c19c7746b21941a9552d14ac0601690c449a85aef2634b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABF 11364 bytes