Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc0b6f221eac88f5…

MALICIOUS

PDF

50.1 KB Created: 2020-08-01 11:34:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac0d5beaf0bad7579e124bb21c0b4940 SHA-1: 5426e8fb3c7ebc1a04625745b96b0df05fd98f05 SHA-256: bc0b6f221eac88f5a2e03b4fd5803c8fad6654f8edb01cd18e1a820ebc433bef
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised with a 'Starbucks vision statement' keyword. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many hosted on Shopify. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector URL is a high-priority indicator.

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=starbucks+vision+statement
    • http://files.connallyband.com/uploads/1/3/1/8/131856381/koguwoxixude.pdf
    • http://files.danielklittleton.com/uploads/1/3/1/4/131452733/vikeguladopikaj-tadalorefeji-zaramamurabavut.pdf
    • http://files.thissoutherngirlcan.com/uploads/1/3/2/7/132712003/1084312.pdf
    • http://files.andreamanniondanceschool.co.uk/uploads/1/3/0/7/130739595/vudapoz_sujudaduvulure_zigama.pdf
    • https://cdn.shopify.com/s/files/1/0434/3064/1829/files/rebetovobovimazawujef.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/10710703193.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27621352833.pdf
    • https://cdn.shopify.com/s/files/1/0428/8951/1071/files/tebinoziribixumulok.pdf
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/denedawijamewuvuxeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/8270954337.pdf
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/fadoje.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0226/files/13327005038.pdf
    • https://cdn.shopify.com/s/files/1/0433/4652/6361/files/topojson_world_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4056/files/97181632885.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_off0000784d.bin
3af69ea55859f63800b8d9a6aaeff9fef8264ceda21959d10b3ba8fed3802ea1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x784D 5160 bytes
font_01_sfnt_off000089c0.bin
a1de5b3040859977531733d86092875007e887d66d53906175ededd402df8e57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89C0 10524 bytes
font_02_sfnt_off0000adb2.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xADB2 4324 bytes

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