Malicious PDF — malware analysis report

Static analysis result for SHA-256 8969115bafec5f5b…

MALICIOUS

PDF

48.2 KB Created: 2020-08-03 20:51:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1c556fe6748fa23bcac1f82e63f13b8e SHA-1: e32875943a75f01a251284235b43044131a480df SHA-256: 8969115bafec5f5bf5ab0f4205e4c38776a96e52c19d7b7f1f4458b67de693b3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a tactic to distribute malicious content or phishing pages through a link farm, potentially for SEO poisoning or to obscure the final destination. The ML classifier strongly supports the malicious nature of this PDF.

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=someone+to+trust+mary+balogh+pdf
    • http://files.abivaonlineresources.com/uploads/1/3/1/3/131378943/005cf7ad5e.pdf
    • http://files.bhexclusivecollections.com/uploads/1/3/0/9/130968950/kegepogoz.pdf
    • http://files.sidcupbowlsclub.com/uploads/1/3/0/9/130969545/3ae789ac09868.pdf
    • http://files.masiuliai.com/uploads/1/3/1/3/131384424/486a62.pdf
    • https://cdn.shopify.com/s/files/1/0428/4225/9612/files/kawusiwezepevaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/dual_wield_parrying.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdf
    • https://cdn.shopify.com/s/files/1/0432/7732/0352/files/tidupegepepibof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xeniwepisovera.pdf
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/webodetot.pdf
    • https://cdn.shopify.com/s/files/1/0430/3618/0634/files/93721502812.pdf
    • https://cdn.shopify.com/s/files/1/0435/9448/1823/files/rutina_de_ejercicios_para_abdominales.pdf
    • https://cdn.shopify.com/s/files/1/0437/6064/8343/files/55497601639.pdf
    • https://cdn.shopify.com/s/files/1/0429/0802/4985/files/48954995421.pdf
    • https://cdn.shopify.com/s/files/1/0428/9570/4227/files/asientos_contables_compuestos.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/18691101864.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007066.bin
ff0c61d48ac802efe633a2174d9ce82f70d4a39aef56304a3b2db7d06182828f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7066 5636 bytes
font_01_sfnt_off00008355.bin
98b63e7e68961262c395ef86fdc4736c4dc60a881d0802b81650a9daafe73199		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8355 10040 bytes
font_02_sfnt_off0000a596.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA596 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.