Malicious PDF — malware analysis report

Static analysis result for SHA-256 44547445b9f59c58…

MALICIOUS

PDF

37.8 KB Created: 2020-07-08 23:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d170023cc78b3d4833b4f79a2dac2bb SHA-1: 66a3f4c593fab1a2d5125d211c7c3774154f0758 SHA-256: 44547445b9f59c5887885c6149912f0984abcaa75c6bec4eb2805955a4027522
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, masquerading as a free OCR PDF to Excel converter. One of the primary links redirects to a known malicious redirector infrastructure. The document's structure and content strongly suggest a phishing or scam attempt designed to lead users to malicious sites.

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/wb?keyword=ocr%20pdf%20to%20excel%20converter%20online%20free
    • http://files.flindersroom4u.com/uploads/1/3/1/8/131857071/37bce30db9.pdf
    • http://files.bambooartscenter.com/uploads/1/3/1/8/131857071/pujeriwetid-napofemerumaw.pdf
    • http://files.spahuahin.net/uploads/1/3/0/7/130775292/ba7285bd87.pdf
    • http://files.computerscpr.com/uploads/1/3/2/7/132740860/xubujolodosetejokuv.pdf
    • http://files.ethos-amcww.org/uploads/1/3/1/6/131606550/venawipudato.pdf
    • http://files.vomhiddencreek.com/uploads/1/3/1/6/131606127/kukuko.pdf
    • http://files.hughesphotography.com/uploads/1/3/0/8/130814124/navoxisuwunewiwumif.pdf
    • http://files.difortea.com/uploads/1/3/1/6/131636954/93a24cb39b095.pdf
    • https://vatudim.files.wordpress.com/2020/07/rojatuparasif.pdf
    • https://gabezavak.files.wordpress.com/2020/06/7163325270.pdf
    • https://ziradodenu.files.wordpress.com/2020/06/95451632905.pdf
    • https://tebobikesez.files.wordpress.com/2020/06/lupofigijenigiwezozinivum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gegexovikorojirokelaxedu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51108684678.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gijamibumiji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/88075317933.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.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_off000051ca.bin
d770e627c68ef29229a51771c45e135dcbf9b2c67f7fd4586b976c9fa8e9bf1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51CA 4704 bytes
font_01_sfnt_off000061db.bin
f555b8470ac361e049f57733fa7281bb7af07bc74703be33f837d51823a8c8ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DB 15080 bytes

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