Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc9847a8a3743d8…

MALICIOUS

PDF

33.2 KB Created: 2020-08-23 15:41:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9371bdcbd8e8c5339325873e658310d2 SHA-1: 3c8f96258f745c5a194a95771b839770e18070fd SHA-256: ffc9847a8a3743d862a7dd1e139199a8cb8c5841fd7a17bddb2514ce070f4683
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=abcd+movie+songs+lyrics'. 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 and a list of numerous other URLs hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute the malicious PDF. No scripts were extracted from this sample.

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=abcd+movie+songs+lyrics
    • http://files.shop.bushnvinefarm.com/uploads/1/3/2/6/132695568/kalavozanuwoxi.pdf
    • https://cdn.shopify.com/s/files/1/0447/9657/5904/files/2590981944.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/vopikekugi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/56503363761.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/nukurobovosubawot.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/48537334532.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7701/files/19499305319.pdf
    • https://cdn.shopify.com/s/files/1/0436/0149/4179/files/frost_death_knight_6._2.pdf
    • https://cdn.shopify.com/s/files/1/0434/8801/8594/files/selodojalakolixu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4488/7966/files/alan_walker_lily.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/wurokewikosuzoliro.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8672/files/warrior_skills_level_1.pdf
    • https://cdn.shopify.com/s/files/1/0437/0405/8010/files/45505894703.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_off00004601.bin
81ccabdfae55802b8519acf8f91ead39c4baba82c227b23b4d0d911b45c39ccf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4601 5340 bytes
font_01_sfnt_off0000581c.bin
d3312fff3b5144c05919824a3c90ee1220c13470395adb812463c471428a9960		 pdf-font-stream PDF embedded font (sfnt) at offset 0x581C 9528 bytes

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