Malicious PDF — malware analysis report

Static analysis result for SHA-256 27def67b735efee7…

MALICIOUS

PDF

46.3 KB Created: 2020-08-20 02:10:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f3f4b7252bed374ad539e4cc3e2574d SHA-1: 1ab622d5f1118c4118c95c90b78b953891a6257e SHA-256: 27def67b735efee77c571e16534096e84b50b6ab032e9ac213b90ee7074e7ae9
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body also contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The presence of a download button heuristic further supports this attack pattern. The primary malicious IOC is the redirector URL.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=canon+ip2770+driver+for+mac+free
    • http://teramer.assertion-evidence.com/uploads/1/3/0/7/130776483/3fba3a8640e068e.pdf
    • http://files.manriquez.net/uploads/1/3/2/7/132710603/287e13.pdf
    • http://kitukewan.happson.com/uploads/1/3/0/8/130814328/149318.pdf
    • http://files.monikerfoundation.org/uploads/1/3/1/3/131398526/483219.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/49065112245.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1943/files/fotinerobamapifigif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72619586694.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xefafozerokadugatevaru.pdf
    • https://cdn.shopify.com/s/files/1/0433/1595/3817/files/galeria_motorola_apk_2018.pdf
    • https://cdn.shopify.com/s/files/1/0435/1819/7912/files/neluregazixawosanif.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/73327394293.pdf
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/3981242245.pdf
    • https://cdn.shopify.com/s/files/1/0431/1708/4833/files/58763890761.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1702/files/jelujafajetefifojob.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_off00006cb2.bin
4950de36139db647592c882b31ca954b7517afed6799412f44ebe5abd7b938c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB2 5412 bytes
font_01_sfnt_off00007f14.bin
fc07662b8533930b7ac3382feed2e2e0b7f1897c5e71a330f85c1fef7c64ebda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F14 14428 bytes

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