Malicious PDF — malware analysis report

Static analysis result for SHA-256 c46fca3d20fcb5ca…

MALICIOUS

PDF

40.2 KB Created: 2020-08-17 00:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6285e27548a7a1a3d3173dfb2456d927 SHA-1: afd0d677db7eaccfdf154869adae9f78eb2e2907 SHA-256: c46fca3d20fcb5cac8e626b18426d02f0b2525fcaabc420579c54d0b4b12694a
160 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body also contains text and URLs related to installing a 'videoder app', aligning with a social engineering lure to install potentially malicious software or browser extensions. The presence of a link farm further suggests an attempt to manipulate search engine results or distribute malicious content.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.ru/pify?keyword=videoder+app++install+old+version
    • http://files.craftybearcoasters.com/uploads/1/3/1/4/131437307/mifesutezazovedugov.pdf
    • http://files.sheeptales.org/uploads/1/3/0/8/130874252/xusasusezebifat_senotojaxez_pebep.pdf
    • http://jigaveb.sailcnce.eu/uploads/1/3/1/4/131453630/zorefizesuvi_sasodizawunir.pdf
    • http://timid.nyccovidrelief.com/uploads/1/3/1/8/131856772/lisinakef.pdf
    • http://files.noelanipta.org/uploads/1/3/1/4/131453817/mubevaxetasa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/dubijilozikaxuvepav.pdf
    • https://cdn.shopify.com/s/files/1/0430/8572/5850/files/public_administration_definitions.pdf
    • https://cdn.shopify.com/s/files/1/0431/7098/8188/files/gufivinivopoxifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/dakegapulob.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/nelagiwodazokapidedij.pdf
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/lanisuxoruzen.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/soul_vessel_hollow_knight.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/61327289402.pdf
    • https://cdn.shopify.com/s/files/1/0433/5435/7915/files/google_sheets_spell_check.pdf
    • https://cdn.shopify.com/s/files/1/0430/7274/9721/files/economic_importance_of_arthropoda.pdf
    • https://cdn.shopify.com/s/files/1/0436/4101/2377/files/mental_math_worksheets_grade_1.pdf
    • https://cdn.shopify.com/s/files/1/0429/8086/8255/files/pagiw.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_off00006013.bin
54e87e6c331c70744e7cba409363919033573267c880f1ee3851e950b4a980bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6013 4976 bytes
font_01_sfnt_off0000710f.bin
f3e6d984dbfa756f82bcf4d2555af1e74bdae431bf5bb32b470c5828fda44808
pdf-font-stream PDF embedded font (sfnt) at offset 0x710F 10160 bytes