Malicious PDF — malware analysis report

Static analysis result for SHA-256 7672ba0cd2f884d5…

MALICIOUS

PDF

35.0 KB Created: 2020-08-20 02:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adea76869df51193564cf14c26c839b4 SHA-1: a0e10b92ae3055dd5b6118b76578cedd3f3da330 SHA-256: 7672ba0cd2f884d5959bbee1af66a21ea91f9ea4db3befdaac7dea95971fcf1f
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 'ttraff.com'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external PDF links, many of which are hosted on Shopify. The document body, though partially corrupted, contains the same URL found in the redirector heuristic, suggesting an attempt to lure users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a likely phishing or scam campaign, potentially using the embedded links to download 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.com/pify?keyword=ali+ali+blank+movie+song++pagalworld
    • http://somuxuko.colebrookwoodcraft.com/uploads/1/3/1/3/131383314/3948515.pdf
    • http://lijomokan.baycolonygardenclub.com/uploads/1/3/0/8/130814328/xegososanoj_lefuguzuloj_jifupokekoseto.pdf
    • http://lelivopo.atomichairsalon.com/uploads/1/3/1/6/131606289/wivanavoson-zefekojagekaxo.pdf
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdf
    • http://files.greensavannahstables.com/uploads/1/3/1/8/131857782/3e2eebd0456db8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/4715120360.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/ripakogo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2310/files/mapa_amsterdam_turismo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/76686781629.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/brain_teaser_picture_puzzles_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/filejeremixikomujuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/wolafijilixasorezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9975/8497/files/garewakufarebarusuba.pdf
    • https://cdn.shopify.com/s/files/1/0438/5295/5810/files/drrm_law.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_off000048ef.bin
cc4ded0f6e67f8f354d75902753f94ce9a95494513966811500f8deb641d2b8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48EF 5624 bytes
font_01_sfnt_off00005bfe.bin
7cf017a06a32cec27a1bc9c5060c08783dc00c50f10a1ba88e89d8a9cfd02e04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFE 10684 bytes

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