Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c5570212248c032…

MALICIOUS

PDF

33.2 KB Created: 2020-08-18 15:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00482b4521311ea9996445d8ba977562 SHA-1: fc0a00644a985c7540951ca15485bd7c11541750 SHA-256: 4c5570212248c032d2105da8685df8c8996d366512d1f71aa766c0152a77fd15
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=amman+photos+pictures'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous other PDF links, some pointing to potentially untrusted domains, further supports the malicious redirection pattern.

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=amman+photos+pictures
    • http://lusikez.thetastingspoon.org/uploads/1/3/1/8/131857334/jefavus.pdf
    • http://junixekeg.stjeromelibrary.org/uploads/1/3/1/1/131164250/morewizixo.pdf
    • http://files.angusyoungroofing.co.uk/uploads/1/3/1/4/131406086/1432340.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4294/files/architectural_design_concept_examples.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/18364936112.pdf
    • https://cdn.shopify.com/s/files/1/0439/3467/9208/files/ceh_v9_certified_ethical_hacker_version_9_practice_tests.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/93535513723.pdf
    • https://cdn.shopify.com/s/files/1/0432/7152/0411/files/53862066293.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/58427319659.pdf
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/64988352554.pdf
    • https://cdn.shopify.com/s/files/1/0429/1438/1980/files/menotifikupojakogefuburov.pdf
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/51954387007.pdf
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/89170331435.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/poker_card_game_rules.pdf
    • https://cdn.shopify.com/s/files/1/0438/6563/7019/files/20896843571.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_off00004733.bin
ced474e7ad816ecc3c5aacc4f389ceb521216b325ac715d7312caec08a94ae07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4733 5128 bytes
font_01_sfnt_off0000586b.bin
dc881fa47d2dcc6ea8350f6562e61cf4c99f076202b6d24d790382237b8f3d9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x586B 9420 bytes

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