Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f49dbddc57ea23e…

MALICIOUS

PDF

38.7 KB Created: 2020-08-28 12:20:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86d212c4886fbe207d26c50fbe134930 SHA-1: 63ddb99b20aa61704d839d5bb6e3cb7349f03c7b SHA-256: 8f49dbddc57ea23e1ec7c260eb49603f61262b2051027f294430cca3dac7031b
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same query string as the malicious URL, suggesting a lure. The primary intent appears to be redirecting the user to malicious infrastructure via the ttraff.com link.

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.com/pify?keyword=how+to+clean+honeywell+humidifier
    • http://toguroxeg.timelessjourneys.net/uploads/1/3/1/6/131606346/figatamopubat.pdf
    • https://cdn.shopify.com/s/files/1/0435/3140/3413/files/chill_touch_cantrip.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gopag.pdf
    • https://cdn.shopify.com/s/files/1/0435/0879/3510/files/24925849896.pdf
    • https://cdn.shopify.com/s/files/1/0431/1053/1238/files/canon_7d_firmware.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/2018_chevrolet_tahoe_premier_rst_performance_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/4256/9368/files/38725112484.pdf
    • https://cdn.shopify.com/s/files/1/0430/8094/1729/files/68138615199.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/anganwadi_sahayika_form_rajasthan.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_off00005aed.bin
02fb808b8fcba49c41d65902eb3da9001387fc695c2f984e45086660810cd256		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AED 5240 bytes
font_01_sfnt_off00006c9f.bin
9ffb1c28951ef2288941188642b22ceb22702acba7a644bacea60938b6fcf3e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9F 9892 bytes

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