Malicious PDF — malware analysis report

Static analysis result for SHA-256 03a94dd9f4efe089…

MALICIOUS

PDF

64.1 KB Created: 2020-08-30 21:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab8c458372b0b35ccca00cf3615109cc SHA-1: d95e305521973d385529ba093b21595901f6ac1a SHA-256: 03a94dd9f4efe089b27a1d051eed3f2682bd07f2b7f6719671b32c84b049edb1
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/wix?keyword=mise+a+jour+parrot+minikit'. The document body, though partially garbled, contains text related to 'Mise a jour parrot minikit' and includes the malicious URL, suggesting a lure for a software update. The presence of numerous Shopify links, while mostly benign, could be used to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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.me/wix?keyword=mise+a+jour+parrot+minikit
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/8100/6244/files/circuits_fawwaz_ulaby.pdf
    • https://cdn.shopify.com/s/files/1/0435/1941/0328/files/anorrectoplastia_sagital_posterior.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0201/files/uninstall_brew_package.pdf
    • https://cdn.shopify.com/s/files/1/0459/9211/6383/files/59674981403.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/2010_honda_odyssey_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/dress_code_policy_formal_attire.pdf
    • https://cdn.shopify.com/s/files/1/0437/3518/7605/files/porunijebupurepefuzik.pdf
    • https://cdn.shopify.com/s/files/1/0427/4988/6620/files/class_amphibians.pdf
    • https://cdn.shopify.com/s/files/1/0437/3449/9489/files/bekejolakijodif.pdf
    • https://cdn.shopify.com/s/files/1/0438/2516/8544/files/38989598344.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/66065699423.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/sidan.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/92703596194.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_off0000bc58.bin
6b2488334a9f91e8ffced446fbcfc860bccab30ddb97c2e1ac121359314ad0fa
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC58 5076 bytes
font_01_sfnt_off0000cd93.bin
c6c5c6f755ca298fb2e9242bb2095838b63a0c14c44c5261ec3e7f633af551f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xCD93 11640 bytes