Malicious PDF — malware analysis report

Static analysis result for SHA-256 0563485a5ab97091…

MALICIOUS

PDF

58.1 KB Created: 2020-08-05 16:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe04b3c669749be42ab32d695d655063 SHA-1: 7dbc5137a0f5bdc03e2a62272dff15f24f53df84 SHA-256: 0563485a5ab9709170cd20c4f505e62c2e673bf932499037a02615f2a2001ffe
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to obscure the final destination. The document also features a large number of embedded links, many pointing to Shopify, suggesting an attempt to create a link farm for SEO manipulation or to host malicious content. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=devi+bhagavata+purana+pdf+telugu
    • http://files.southsurreygardenclub.ca/uploads/1/3/1/3/131398019/tefowipuxuj.pdf
    • http://files.buddiesbooksandbrunch.org/uploads/1/3/1/3/131380619/9194975.pdf
    • http://betino.connectingcommunities.com.au/uploads/1/3/2/7/132740214/2081f63a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/dolegojineludonejawar.pdf
    • https://cdn.shopify.com/s/files/1/0434/6449/1174/files/80735004394.pdf
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/mifirolunomivig.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/77453765893.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/94793785863.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4903/files/74376095137.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62894204366.pdf
    • https://cdn.shopify.com/s/files/1/0437/4895/0170/files/saxibefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/siege_of_orgrimmar_solo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/banefidofekadozimodomi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0813/files/3902880740.pdf
    • https://cdn.shopify.com/s/files/1/0431/8271/9127/files/kemapetupam.pdf
    • https://cdn.shopify.com/s/files/1/0435/5964/9429/files/40120321525.pdf
    • https://cdn.shopify.com/s/files/1/0438/1681/2706/files/trane_xe80_furnace_manual.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096fb.bin
b1a60f64be05b2ba99a7871aaa5e6bf32140e74a664b0af532be29a19f565f89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96FB 5324 bytes
font_01_sfnt_off0000a91b.bin
335964d80a27a44e9979032d34cff1d70a8be8d09a99db8f336d913c3b4f5d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA91B 10176 bytes
font_02_sfnt_off0000cc38.bin
522575acca96cba6ae307d3a3a933cb74160b55c934f4bb6a28175b444bab382		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC38 3796 bytes

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