Malicious PDF — malware analysis report

Static analysis result for SHA-256 5460807ffe63b6d0…

MALICIOUS

PDF

44.8 KB Created: 2020-08-21 09:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55eaab470ef8c740a9ea113d90396986 SHA-1: 78f12976514686c622b62798147de8815b889760 SHA-256: 5460807ffe63b6d04ba4ee9fed1a47b5c6a97ed0b89cbcbffd16599ce3de3cc1
128 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, specifically pointing to 'https://ttraff.cc/pify?keyword=business+card+template+illustrator+free'. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting PDF files. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to trick the user into clicking the malicious link. No scripts were extracted from this sample.

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=business+card+template+illustrator+free
    • http://files.millpro.org/uploads/1/3/1/3/131384489/5c156e.pdf
    • http://files.bookofcenturies.com/uploads/1/3/1/1/131163851/sabekuf.pdf
    • http://files.katherinebozzi.com/uploads/1/3/0/7/130740118/3534167.pdf
    • http://vofakare.sirsdigitalcommerce.com/uploads/1/3/0/7/130776433/dideno_susekowijafif.pdf
    • http://difip.mos5stepchallenge.com/uploads/1/3/1/4/131438539/jifuvipe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/livro_o_cristianismo_puro_e_simples.pdf
    • https://cdn.shopify.com/s/files/1/0431/8694/6212/files/bhagavad_gita_slokas_in_sanskrit_with_meaning_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/60011797684.pdf
    • https://cdn.shopify.com/s/files/1/0437/7562/3320/files/bas_autobuska_stanica_informacije_telefon.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/parovusotabapowi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/how_to_convert_mht_to.pdf
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/13640892825.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/27420873194.pdf
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/vogosigejulijopab.pdf
    • https://cdn.shopify.com/s/files/1/0439/5224/2856/files/business_plan_for_software_development_company.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/algebra_2_quadratic_functions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/painter_essentials_5.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_off000070a8.bin
440f070ed167ec4160b6802e0951af464be9978258aeff5d80cc37f6133f6ff6
pdf-font-stream PDF embedded font (sfnt) at offset 0x70A8 5348 bytes
font_01_sfnt_off000082b9.bin
9860c3c06554cca0cd204c7aab5971aea48cb6c66af8fda8119a1c3e93523345
pdf-font-stream PDF embedded font (sfnt) at offset 0x82B9 10412 bytes