Malicious PDF — malware analysis report

Static analysis result for SHA-256 4955c329db87f62b…

MALICIOUS

PDF

36.9 KB Created: 2020-08-02 00:28:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 978160348829173140553aafc0ab16cb SHA-1: 0c8520ce5e26dc09fe0f6f303f7bf28e87202636 SHA-256: 4955c329db87f62b98a0d32886316a849b1f74a2743f30d79a4290b735343f18
150 Risk Score

Malware Insights

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

The PDF contains multiple links, including one to a known malicious redirector at `ttraff.cc`. The document body, though malformed, suggests a lure for a free download of a 'Speer reloading manual'. This indicates a phishing or social engineering attack aimed at directing users to malicious infrastructure. No scripts were extracted from this sample.

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.cc/pify?keyword=speer+reloading+manual+14+free+download
    • http://files.tidewaterclassical.com/uploads/1/3/1/4/131438604/tanapeva_jujipodo_sisixilo_xikim.pdf
    • http://files.hutaka.com/uploads/1/3/1/6/131606373/mimoda.pdf
    • http://files.purplebutterflyphotography.com/uploads/1/3/0/8/130874633/tudavidevejosen-bajinitonon-zamibozu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8448/files/46486475462.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32867625585.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/vufugunelulugitid.pdf
    • https://cdn.shopify.com/s/files/1/0430/9362/2935/files/degovevixev.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/37301100177.pdf
    • https://cdn.shopify.com/s/files/1/0437/0661/3912/files/nidogigolorovog.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/25525211213.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/83513132511.pdf
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/veloba.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43396058945.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/mutet.pdf
    • https://cdn.shopify.com/s/files/1/0435/9385/9240/files/rituxepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/97147047885.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_off00004f9a.bin
6243d6c702fb13c11e110623f76056dfb1219be6ca1f7908566ded7d9c7101e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F9A 5516 bytes
font_01_sfnt_off00006262.bin
ce6da0597e07ec5ffbfa470087d167cfa4fc446bc4db0493396e0efde62953bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6262 10644 bytes

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