Malicious PDF — malware analysis report

Static analysis result for SHA-256 211c0396c8535870…

MALICIOUS

PDF

46.8 KB Created: 2020-08-24 07:09:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b246031716fa9c4284cc7824924f3e80 SHA-1: 318c53e52bba3456760bd86b572cbad44663f95d SHA-256: 211c0396c8535870cad52c98c6a7016b7fe79bafe0d10bc2142b90f5a4bf9df9
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=android+emulator+portable+gratis'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs hosted on platforms like Shopify. The ML classifier also strongly flagged this PDF as malicious. The presence of these elements indicates a likely attempt to direct users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=android+emulator+portable+gratis
    • http://files.dovetreeveterinarycare.co.uk/uploads/1/3/0/7/130740033/zonorajutepebupena.pdf
    • http://xinax.fastcleanservices.net/uploads/1/3/1/8/131858661/tonuzodifor.pdf
    • http://simid.thegreatwines.com/uploads/1/3/1/4/131438684/wulopo-fikavuxaba-xobuw.pdf
    • http://files.rug-cutters.de/uploads/1/3/1/4/131438468/vopafoki.pdf
    • http://files.weaversofeternity.com/uploads/1/3/1/4/131453658/4865108.pdf
    • https://cdn.shopify.com/s/files/1/0435/4090/6135/files/florida_permit_test_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/188bet_asia_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/5770/8193/files/tumufi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6641/6534/files/zesodoninunizu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/ppap_ford_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/zajamenelojadajusowisixe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/64935680235.pdf
    • https://cdn.shopify.com/s/files/1/0429/2693/2124/files/xefurelazujilowomiva.pdf
    • https://cdn.shopify.com/s/files/1/0434/4931/9577/files/jackson_date_format_iso_8601.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/pagejaseriju.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5895/files/janatha_garage_audio_song_tamil.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_off00007871.bin
9428bc31b3d557aeb3574af4181a252539c1e9c4a95e6e8881ad4c3e450d9cf4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7871 5408 bytes
font_01_sfnt_off00008aa9.bin
47774bc3c1fe8b29f84f4223dd1147f2925799d17402186116fa025555bd674f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA9 10364 bytes