Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7018a1f0beb2332…

MALICIOUS

PDF

41.2 KB Created: 2020-08-04 10:17:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88e9b341bb5dac04eefe6af1207ffe21 SHA-1: 7086657df857775471c132d1702a47587f2d2cf5 SHA-256: b7018a1f0beb2332b22b18db86023a369086d70c4eb7ed9d6e78e6c951d0e7a3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains text related to 'reading comprehension worksheets' and includes the malicious URL, suggesting a lure to trick users into clicking. The presence of numerous Shopify links, while many are benign, is part of a link farm strategy to improve search engine visibility for malicious content.

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=reading+comprehension+worksheets+pdf+5th+grade
    • http://files.beautyandbeyondphilippines.com/uploads/1/3/1/4/131410158/jemotajimug.pdf
    • http://files.alexanderinsurancevero.com/uploads/1/3/1/4/131411688/7622724.pdf
    • http://files.mcclure-insurance.com/uploads/1/3/1/0/131070723/3b02179dbb83bc.pdf
    • https://cdn.shopify.com/s/files/1/0430/6491/8165/files/70011017196.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1810/files/japanese_wii_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/56431564401.pdf
    • https://cdn.shopify.com/s/files/1/0434/4804/1637/files/mugizobeturusofuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/4176/7072/files/dofajibivali.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/runaxafasejuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/7396/1110/files/biditawofijud.pdf
    • https://cdn.shopify.com/s/files/1/0430/8113/8343/files/52358831461.pdf
    • https://cdn.shopify.com/s/files/1/0431/0558/3266/files/business_management.pdf
    • https://cdn.shopify.com/s/files/1/0431/8819/1396/files/25836380646.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/tixafuragew.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_off000061ba.bin
f7a8bd17ec6fa47e0a661199673c9014b5a137b378a5fb8e3dfcde72e03acd8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BA 5824 bytes
font_01_sfnt_off00007589.bin
235fef634d0366d2c4eee9f06b575f9635761bff48b8a712910bffc4e094d9c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7589 10080 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.