Malicious PDF — malware analysis report

Static analysis result for SHA-256 435a7a25d8d5123a…

MALICIOUS

PDF

35.4 KB Created: 2020-08-14 18:29:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bfc58443f9bba796aa2c9df54884793 SHA-1: 284842cf83963a182f05ebe013ce006f4dee1c13 SHA-256: 435a7a25d8d5123a1ad1018f751622ed9b21bd71fe70c282d82630019afd0b82
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bharat+movie+hd+video+song++2019'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, including 'https://cdn.shopify.com/s/files/1/0432/0103/6443/files/wares.pdf'. The document body, though heavily obfuscated, contains text related to a movie and the URLs, suggesting a lure for users to click on malicious links disguised as download or content links.

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.ru/pify?keyword=bharat+movie+hd+video+song++2019
    • http://files.pashaw.org/uploads/1/3/0/7/130775108/87bfd4.pdf
    • https://cdn.shopify.com/s/files/1/0432/0103/6443/files/wares.pdf
    • https://cdn.shopify.com/s/files/1/0431/9100/9442/files/tisafumejogofeboze.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/mitevovezipexapusarupasud.pdf
    • https://cdn.shopify.com/s/files/1/0438/2982/1600/files/kolosifupe.pdf
    • https://cdn.shopify.com/s/files/1/0438/4112/6565/files/mobavonebegekolegujawex.pdf
    • https://cdn.shopify.com/s/files/1/0436/9576/7706/files/algebra_2_saxon_math.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/bring_up_the_bodies.pdf
    • https://cdn.shopify.com/s/files/1/0432/6644/1376/files/zabebatoveku.pdf
    • https://cdn.shopify.com/s/files/1/0431/6554/8705/files/chemistry_notes_form_4.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003ed9.bin
f2ead90621cc1c489130755500314483bb2fb1e2235037ba50b3f49962151d33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3ED9 5588 bytes
font_01_sfnt_off000051b6.bin
560de34821835f23e4f93266a36c2b4f4a969c9b392f56e2903a68e282d74fff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51B6 9672 bytes
font_02_sfnt_off000072e9.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E9 4324 bytes

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