Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca68a40e64315185…

MALICIOUS

PDF

33.7 KB Created: 2020-08-26 14:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a06571ce96543a3fba50f131a77b0f56 SHA-1: c6c9b4306d670da49a72fcbfd480124f029348b7 SHA-256: ca68a40e64315185e4033b921d57d1b6d45633443b9edece1b656917d6c2ddd9
150 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, pointing to 'https://ttraff.com/pify?keyword=total+money+makeover+by+dave+ramsey+amazon'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains the same suspicious URL and appears to be a lure related to a book title, suggesting a phishing or scam attempt. The primary attack vector is likely the malicious link embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=total+money+makeover+by+dave+ramsey+amazon
    • http://files.grewbuilding.com/uploads/1/3/1/4/131410812/aa181970059.pdf
    • https://cdn.shopify.com/s/files/1/0432/5815/1070/files/49916688268.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/cerebro_masculino_libro.pdf
    • https://cdn.shopify.com/s/files/1/0433/6372/9557/files/puvexuzunatonivaxaletafe.pdf
    • https://cdn.shopify.com/s/files/1/0436/4995/8046/files/nijixilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/8032323694.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/xubevozaba.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/basic_laws_of_electronics_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/sherlock_holmes_in_the_22nd_century.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_off00004304.bin
8994b7db941bc369fffc927ad550b82b6e6b040b72b070897e776c8937ef8014		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4304 5336 bytes
font_01_sfnt_off00005522.bin
693891916e0d5782b863e290e3bf676244c5b946851b9d9f2f02c2f50925ddc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5522 10452 bytes

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