Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd13630f230cdd21…

MALICIOUS

PDF

42.7 KB Created: 2020-08-11 23:22:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9051ade249a543801a0ee93409a9d88d SHA-1: 78d6dae7d93591f8d54b5047ae0f935df318e8dc SHA-256: fd13630f230cdd212087210f52c22a8ad445b8a5df66c8a61ead45998080ece0
120 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, specifically pointing to 'https://ttraff.cc/pify?keyword=bologna+city+map+pdf'. This indicates a phishing or social engineering attempt to redirect the user to malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of a link farm heuristic further suggests an attempt to manipulate search engine results or distribute malicious links.

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.cc/pify?keyword=bologna+city+map+pdf
    • http://files.johntstephan.com/uploads/1/3/0/8/130814226/58ebdc43d2.pdf
    • http://files.bingedrifting.com/uploads/1/3/1/3/131380583/pawivuzujoxofep_lubakuwiz.pdf
    • http://jolujo.artworkbyhat.com/uploads/1/3/1/4/131482952/telilu-japopapizikas.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/50680556141.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/17345474347.pdf
    • https://cdn.shopify.com/s/files/1/0454/1018/9480/files/define_pragmatics.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/no_more_dream_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/0722/0635/files/jefejopozugi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/fundamentals_of_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0437/8610/9086/files/28911914392.pdf
    • https://cdn.shopify.com/s/files/1/0432/5061/4429/files/article_of_association_and_memorandum_of_association.pdf
    • https://cdn.shopify.com/s/files/1/0434/6111/6064/files/poda_do_abacateiro.pdf
    • https://cdn.shopify.com/s/files/1/0437/3856/2712/files/vezisileliwerusin.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_off00006083.bin
1fa2d5d10c292a38d9b3578e6495cd252074510cd3106bbb5b6c1b48b5a8c267		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6083 5352 bytes
font_01_sfnt_off000072b4.bin
8b264b84e735472e4ad491fe6bce311008f4df7678b71fa7db54388d2d95bcaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B4 14060 bytes

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