Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce045028f49dd3d3…

MALICIOUS

PDF

40.8 KB Created: 2020-08-04 16:11:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfc54b12917bf068e83e83cded6ed61e SHA-1: d9652633900ede3307c9b439b4129c03aaec3f36 SHA-256: ce045028f49dd3d3758ef9831c94d2611d28fb8691d9b1de22d317801a6784df
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at `ttraff.com`. The heuristic firings indicate this PDF is designed as a link farm, likely to obscure the malicious destination. The primary malicious URL identified is `https://ttraff.com/pify?keyword=lava+uke+chords+pdf`. The document body, though heavily obfuscated, contains this URL and other PDF links, reinforcing the lure.

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=lava+uke+chords+pdf
    • http://files.briandanleyfitness.com/uploads/1/3/2/7/132712207/ruroki.pdf
    • http://files.kinn131.org/uploads/1/3/1/1/131163782/bududifefinakan.pdf
    • http://files.diypaintguy.com/uploads/1/3/1/0/131071315/362fd.pdf
    • http://xoregusov.truthchristianacademy.info/uploads/1/3/1/8/131857920/gofilugozimudazake.pdf
    • http://files.imperialmarketeatery.ca/uploads/1/3/0/9/130969470/vetawidagojimonufute.pdf
    • https://cdn.shopify.com/s/files/1/0433/6143/5813/files/942760735.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wupukibasabozuxijixosi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/36794568663.pdf
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/jivanuligusu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/mazegavupexifesiruzo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66048758492.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/bisufikamiwenasawiti.pdf
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/zorobapuxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/8814/0696/files/fewurowaweruxofu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/vugikuronotekujebak.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/pendulum_chart.pdf
    • https://cdn.shopify.com/s/files/1/0434/7779/4982/files/pusepipodilidaruwod.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_off00005c78.bin
100a3f70654028c41b17d284c6f28e8c6d2bb1e9d792a490a1d442825863cfb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C78 5276 bytes
font_01_sfnt_off00006e70.bin
21018e2fd426b7ea4cb49ea8d9fec760ceacdeaca199586be7abcd88fd9597ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E70 12536 bytes

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