Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc509fc8871549d5…

MALICIOUS

PDF

39.9 KB Created: 2020-08-12 10:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1fa25b01823e1d48b232f305bfe5628 SHA-1: 734b79be0c3c832d2294ba164edd3e039d338813 SHA-256: fc509fc8871549d5d6eea7a13b51a47e6275cd3966503faf4279b6b8a468b092
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=papyrus+of+ani+pdf+free+download'. This indicates an attempt to lure users to a malicious site under the guise of a free download. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. 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=papyrus+of+ani+pdf+free+download
    • http://files.sportworkschiro.com/uploads/1/3/1/4/131437147/depus-fimirefokironi.pdf
    • http://files.nicholelreber.com/uploads/1/3/0/7/130776208/5933509.pdf
    • http://files.beanpolemetal.com/uploads/1/3/0/9/130969426/remikemabixal.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/jotepemi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9108/2918/files/22027080727.pdf
    • https://cdn.shopify.com/s/files/1/0435/7026/6273/files/12688545442.pdf
    • https://cdn.shopify.com/s/files/1/0430/9506/4730/files/javufowexosibogovare.pdf
    • https://cdn.shopify.com/s/files/1/0429/3066/7673/files/48627721208.pdf
    • https://cdn.shopify.com/s/files/1/0430/7622/3129/files/poguw.pdf
    • https://cdn.shopify.com/s/files/1/0440/7269/8006/files/vicon_disc_mower.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/john_deere_42_mower_deck.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/xogasoloxub.pdf
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/xekasewijefavuzoxafevem.pdf
    • https://cdn.shopify.com/s/files/1/0431/6204/2529/files/office_2007_updates.pdf
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/mimuluxoji.pdf
    • https://cdn.shopify.com/s/files/1/0438/8870/5688/files/minecraft_enchantments_id.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/zinak.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_off00005e0c.bin
91f239c14521f5f76d66796664b0e7a9003b94262d6392d2b133ff58aff0ee10
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E0C 5228 bytes
font_01_sfnt_off00006ffd.bin
f94ed827319c1c277cc877f8e7a5b8f7370329189589a94a87bbedb7ab2f6585
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFD 10232 bytes