Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9bb9c388caab511…

MALICIOUS

PDF

40.1 KB Created: 2020-09-01 02:47:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ce8838a46171ca63297985ad187bd7b SHA-1: 92c15ee864c260b018911475aeaa0cbecda1f147 SHA-256: d9bb9c388caab5114e93ef8b979c7c749d9566bac69fddca3425f5ff27b4086e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/wix?keyword=free+trial+vpn+for+windows+10`. This URL is embedded within the document body, disguised as an offer for a free VPN trial. The document also contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. No scripts were extracted from this sample.

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/wix?keyword=free+trial+vpn+for+windows+10
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/raselaxipakepodanot.pdf
    • https://cdn.shopify.com/s/files/1/0431/4634/6658/files/86433234231.pdf
    • https://cdn.shopify.com/s/files/1/0433/3705/6411/files/ain_t_your_mama_lyrics_video.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78030006053.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0647/files/atomic_structure_jee_notes.pdf
    • https://cdn.shopify.com/s/files/1/0461/1817/4884/files/alice_in_wonderland_english_movie.pdf
    • https://cdn.shopify.com/s/files/1/0437/4256/0405/files/amos_fortune_free_man.pdf
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/wotogexi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/28220115836.pdf
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/69934959382.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9321/files/91157113970.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6405/files/sudutexoguvurenebid.pdf
    • https://cdn.shopify.com/s/files/1/0434/3463/9522/files/pabudawasubetonaxul.pdf
    • https://cdn.shopify.com/s/files/1/0440/7456/5784/files/pokemon_tcg_playmat.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_off00006090.bin
a988d0199349e1f82910c880d25db73630015ad0fd36b7cf86e448baa11a4a5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6090 5336 bytes
font_01_sfnt_off000072de.bin
e55cb58ac1ba0c75444ea1609c321a5290fa12d8ab8cf71c2d599827f9b5beb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72DE 9632 bytes

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