Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c00093380971689…

MALICIOUS

PDF

51.3 KB Created: 2020-08-29 04:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcda087668e344f44d0924be46651976 SHA-1: de8603f8c6b1902a028311b52f7bc99f038a50c7 SHA-256: 4c0009338097168989000acf0a6804ce8309a6299d958620a1820deee5ff6f41
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also contains a link farm heuristic, suggesting it's part of a larger SEO poisoning or spam campaign. No scripts were extracted, but the embedded URL is sufficient to classify the attack pattern.

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=lightning+protection+using+lfa%2528+lightning+frequency+arrester+pdf
    • https://cdn.shopify.com/s/files/1/0429/2778/4095/files/case_study_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/5464016919.pdf
    • https://cdn.shopify.com/s/files/1/0436/4442/0246/files/19437531811.pdf
    • https://cdn.shopify.com/s/files/1/0434/2562/8316/files/kokisazagivefijadip.pdf
    • https://cdn.shopify.com/s/files/1/0435/0217/4374/files/87646841589.pdf
    • https://static.usrfiles.com/ugd/b8c837_4975160a33424c01bf1e33a58fb555cf.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1045/files/mathematics_class_12_book.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/84862081410.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/predicciones_misterpopo_2017.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/lapubomozasigerimasemis.pdf
    • https://static.usrfiles.com/ugd/b8c837_6eb4a8b1930d423eb87b3e8f3afcc765.pdf
    • https://static.usrfiles.com/ugd/b8c837_dbaaeef765e44aec8c019e6d1b63adac.pdf
    • https://static.usrfiles.com/ugd/b8c837_854749b94cf34baca9ab932ae6fd90a9.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_off000088cc.bin
6d81d46ba5bbe3bc499904a2fce10ce0c432501ff89897ad5c73980e3ec4b347		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88CC 5664 bytes
font_01_sfnt_off00009c19.bin
4b91d8b063298fd378c876625ede4f1f671bb984f547330f6b41628084b9cf92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C19 10424 bytes

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