Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90ba14ed34b7b94…

MALICIOUS

PDF

37.4 KB Created: 2020-08-23 16:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70e5b398bd0a90790e0a91f0b7d3bf3c SHA-1: def853c217d78a8e8aa10a1651ef4eddefdec532 SHA-256: d90ba14ed34b7b942e8771f729de04c0f5cdfec82bea89eebc4a0323d2ca5a54
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a tactic to obscure the malicious destination and potentially leverage SEO techniques to attract victims. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, indicating the primary intent is to lead the user to harmful content.

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=logo+quiz+answers+level+2+logo+38
    • http://fezubawo.mtoak.net/uploads/1/3/2/6/132681670/wibiv_sivas.pdf
    • http://navew.taiwanhotelnews.com/uploads/1/3/0/8/130813714/pumenixuwifo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/74327858295.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/73917971765.pdf
    • https://cdn.shopify.com/s/files/1/0451/0813/4053/files/samavobajomi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6627/7534/files/alzheimer_s_disease_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0316/files/home_cleaners_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21617342462.pdf
    • https://cdn.shopify.com/s/files/1/0436/4081/5774/files/lawini.pdf
    • https://cdn.shopify.com/s/files/1/0434/7304/3622/files/bedard_zamana_kya_jane_1959_songs.pdf
    • https://cdn.shopify.com/s/files/1/0429/4053/0854/files/94992700956.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/15854950068.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_off00005206.bin
33045a9e6ac262a3d2137799d857887735c3d2bcab2a79a0f08da31d1133f213		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5206 5612 bytes
font_01_sfnt_off0000654d.bin
270f24fc217956a9686d551d90378fe154c05a4bb0e8dba3a8ed93e54ebfffa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654D 10544 bytes

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