Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2bbebdc0a5b94c…

MALICIOUS

PDF

44.4 KB Created: 2020-08-19 23:39:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d3d835ef81036cf9640645bfb3f94c2 SHA-1: 7396eee2e4eee4300e59f3485efdaff4aee301df SHA-256: dc2bbebdc0a5b94c089aa0fe0d299a148df890acdcee3158e17651ad638d2b23
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body disguised as a TV show guide. This link points to 'https://ttraff.cc/pify?keyword=charmed+season+8+episode+guide', indicating a social engineering lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains hosting other PDFs. The primary malicious URL is the most critical IOC.

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/pify?keyword=charmed+season+8+episode+guide
    • http://files.rockyroadk9.com/uploads/1/3/1/3/131380213/2e6d5fdb90.pdf
    • http://files.westsidecma.org/uploads/1/3/1/4/131407089/vuribunulip_xuboso_jutakude.pdf
    • http://gomom.northcountyorganichealing.com/uploads/1/3/1/6/131606490/31da6a43.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5425/files/silugiduvoruwenubuve.pdf
    • https://cdn.shopify.com/s/files/1/0448/2777/1040/files/mamigoruguxigir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdf
    • https://cdn.shopify.com/s/files/1/0432/1188/2659/files/arapahoe_county_district_court_transcript_request_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2392/files/maziviko.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/can_t_hurt_me_by_david_goggins_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0014/3770/files/travelling_salesman_problem_c.pdf
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/18623090489.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/71440715878.pdf
    • https://cdn.shopify.com/s/files/1/0433/9315/5237/files/rupomidapabewajoj.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_off0000705f.bin
c0152412bb4a13c278d1dd2e944c5d8c068fe064cb2340db6ed1825d03ce0a5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705F 5440 bytes
font_01_sfnt_off000082bb.bin
cfc084c2cb67244e7432e182f037ccc62660083c1296b9fb206c258e3297841c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82BB 10004 bytes

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