Malicious PDF — malware analysis report

Static analysis result for SHA-256 98d95e5ddc33cc95…

MALICIOUS

PDF

45.7 KB Created: 2020-08-07 04:22:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 583c45adf3d883b01b220a6019d63321 SHA-1: dccb1148a87a4cf5480f2f4e4be662645ccf58fa SHA-256: 98d95e5ddc33cc955abbd3f484c21be29b3ca7402bc8080cd1bc887bcef2e4e3
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised with a seemingly innocuous keyword. The document body, though heavily obfuscated, also contains this URL, suggesting a social engineering attempt to trick the user into clicking the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious destination. No scripts were extracted, and the family is unknown due to the lack of further payload indicators.

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/wb?keyword=croydon%20tram%20map%20pdf
    • http://files.macombcountymga.com/uploads/1/3/1/3/131397927/155680c3.pdf
    • http://files.rarepoultrybreedersassociation.com/uploads/1/3/1/8/131872199/4bdb284.pdf
    • http://files.championhouseofcare.org/uploads/1/3/2/7/132740291/616b2078.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8695/files/56678025149.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/animal_kingdom_resort_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3282/files/78278367821.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/diguvisiden.pdf
    • https://cdn.shopify.com/s/files/1/0432/6889/8966/files/27411388785.pdf
    • https://cdn.shopify.com/s/files/1/0436/8865/7049/files/jotaruxozapo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/muxuzekimoxan.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/xovipunelovadok.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/50276672137.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2805/files/object_oriented_actionscript_3._0.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/kokikaxabagenotagow.pdf
    • https://cdn.shopify.com/s/files/1/0438/2723/2918/files/tijebomawar.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_off00006867.bin
263f0b7a24d0007e06fb0685edc6a07c4bbaf8bc622835de785b860d5097284d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6867 4724 bytes
font_01_sfnt_off0000785d.bin
613d29cb94ea414c6d9e49591e9b946b73acc4649aaff1c2f2827bc3b8240cce
pdf-font-stream PDF embedded font (sfnt) at offset 0x785D 10488 bytes
font_02_sfnt_off00009c35.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C35 4324 bytes