Malicious PDF — malware analysis report

Static analysis result for SHA-256 28dfcb09a2e55e02…

MALICIOUS

PDF

38.3 KB Created: 2020-08-30 01:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 064378a887536011068cfa2cd390dd19 SHA-1: d59427810fb110bd541d476c22b63f4d45b76d5c SHA-256: 28dfcb09a2e55e023905e1bca650438da781c9d7ee26c70062e4c5e6bba7f186
150 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. Additionally, it contains a mass external PDF link farm, with many links pointing to Shopify domains. The ML classifier also strongly indicated maliciousness. The primary malicious link is https://ttraff.com/wix?keyword=pearson+marr+archetype+indicator, which likely serves as a lure to a phishing or malware delivery site.

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/wix?keyword=pearson+marr+archetype+indicator
    • https://static.usrfiles.com/ugd/ca32a8_8ea58da9aee741d6ac4727e2cbb31a6e.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd3b8e362a2e4060896fd3ae632f73cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_8f8ef4fdabd7440c9452d65214075379.pdf
    • https://cdn.shopify.com/s/files/1/0438/6743/9264/files/67265082437.pdf
    • https://cdn.shopify.com/s/files/1/0436/7102/7865/files/citizen_blue_angels_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/2906/7938/files/bedovitupetojezamudegub.pdf
    • https://cdn.shopify.com/s/files/1/0430/8860/9429/files/kizamesuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56802730071.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6026/files/up24_jawbone_with_motionx_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/comment_associer_deux_fichiers.pdf
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/38341257975.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/95908800391.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4992/files/dictionnaire_des_accords_guitare.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_off000054a9.bin
63c81bc6c056458139bff3f8d1dc870fae97a9af6a8b3ea08371e8b9a5e34dad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A9 5384 bytes
font_01_sfnt_off000066c7.bin
22624d8c998153631d6688e7c607fc056d6338ac0f1c19f8938c3c2987cb172c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C7 10532 bytes

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