Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cd9c9c9e3bf1d1b…

MALICIOUS

PDF

46.8 KB Created: 2020-07-30 10:09:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae02a1e658126cd2449956f581ae5bcd SHA-1: 090a8b3ddb1cc1ca45fe17d3d31821324197e4d4 SHA-256: 6cd9c9c9e3bf1d1b245cd818b997b9a5f8b964f6ce5a4163065162b90329a398
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. This suggests the document is designed to lure users to potentially harmful websites, possibly for phishing or to distribute further malware. The presence of numerous Shopify-hosted PDF links indicates a potential link farm for SEO manipulation or to obscure the malicious redirector.

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.ru/pify?keyword=organon+homeopatia+pdf
    • http://files.tenyearsonestep.com/uploads/1/3/1/3/131383934/475a0f9.pdf
    • http://files.abbykingphotography.com/uploads/1/3/0/8/130813988/b1ea600df0ca894.pdf
    • http://files.thesanctuaryatmn.com/uploads/1/3/1/8/131856184/d83262d07.pdf
    • http://files.californiacalvarynaz.org/uploads/1/3/0/8/130874060/1945519.pdf
    • http://files.midstateinspectionservices.com/uploads/1/3/0/7/130776786/640007.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64831632673.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/6261473316.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2097/files/lezokitajuduwajufukex.pdf
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/33304116660.pdf
    • https://cdn.shopify.com/s/files/1/0435/4365/8650/files/widejakatewibuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/bodowexolatapevumo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8282/5382/files/86523175005.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2103/files/rotimemetubemiritaginup.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1794/files/paweb.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/56046196234.pdf
    • https://cdn.shopify.com/s/files/1/0436/9183/5547/files/gotifon.pdf
    • https://cdn.shopify.com/s/files/1/0433/4728/0026/files/54659320332.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_off00007a9a.bin
74e4ff461100441ffc092ec3eaac612dd3ab3ee3e7249176e0c67eec7f6fe2da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9A 5060 bytes
font_01_sfnt_off00008b9c.bin
034067e6e3ac9bc391653a01c01e0d8afcf43a4e9581b6a68e958a1591c76f31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9C 10056 bytes

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