Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0007e2d42b737f…

MALICIOUS

PDF

41.6 KB Created: 2020-08-12 09:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d72302427827881c22e5a4298502660d SHA-1: df7ff5e6647b15adad673661581c025be696e416 SHA-256: 7e0007e2d42b737f03f4293fbf18b0976410ec6e2dae486c0bae628d49f558a2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier as malicious and contains a link to a known malicious redirector. The document body, though obfuscated, contains the URL that leads to a link farm of other PDFs, suggesting a SEO poisoning or link-farming attack. The primary malicious URL is https://ttraff.cc/pify?keyword=habitos+alimentarios+de+los+adolescentes+pdf, which likely serves as a gateway to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=habitos+alimentarios+de+los+adolescentes+pdf
    • http://files.lizleyden.com/uploads/1/3/2/7/132710779/sitadizixu_bukavewat_sowubunapa_tumute.pdf
    • http://files.ireneosbornsculpture.com/uploads/1/3/0/8/130813781/0b0c0.pdf
    • http://files.classupdates.org/uploads/1/3/1/0/131070434/d387576433692.pdf
    • http://files.rightchoicesurrogacy.com/uploads/1/3/1/4/131452976/776df2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/rodiguj.pdf
    • https://cdn.shopify.com/s/files/1/0434/7599/2728/files/6578938979.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/banen.pdf
    • https://cdn.shopify.com/s/files/1/0431/1855/9393/files/day_by_day_armageddon.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/php_push_to_array.pdf
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/32991800363.pdf
    • https://cdn.shopify.com/s/files/1/0434/9699/7030/files/convertir_a_word_online_i_love.pdf
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/gonurawonikiretovopefesow.pdf
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/adverse_action_notice.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/attestation_de_salaire_tunisie.pdf
    • https://cdn.shopify.com/s/files/1/0432/5349/8014/files/785541681.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/movebo.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061e9.bin
057638b0e3a3c63edf11ab6be1442827dcdfbe99908dc4b90377d8c80819c25f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E9 5404 bytes
font_01_sfnt_off0000741f.bin
a07a3c78d2059e3eadba67527055db8e6d5967479d8c73a9c89db773de752406		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741F 10868 bytes

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