Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd08cdc6942b9f61…

MALICIOUS

PDF

49.4 KB Created: 2020-07-29 21:05:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 248d6a850feda5176410321dee0b4e14 SHA-1: cae3a8bccdd241c876ec7e35cbffecf21bd20811 SHA-256: dd08cdc6942b9f6166ecbbaa1a6c20775b635ca5bc9a576b2065a52aabde5cd3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary malicious URL identified is https://ttraff.cc/pify?keyword=data+analysis+articles+pdf, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, suggests a lure related to 'data analysis articles'. No scripts were extracted, limiting the analysis of direct payload execution.

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=data+analysis+articles+pdf
    • http://files.fetrowphotography.com/uploads/1/3/1/4/131437984/kuvizarafadu.pdf
    • http://files.dpconveyancing.co.uk/uploads/1/3/2/6/132682930/selakozaz_zalinulateg.pdf
    • http://files.mamasteessentials.com/uploads/1/3/0/9/130969847/3767124.pdf
    • http://files.piercemadison.com/uploads/1/3/1/4/131453421/segivez.pdf
    • http://files.pixelleadershipgroup.com/uploads/1/3/1/8/131871625/rabimepomalijinuva.pdf
    • http://files.pier
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jotinu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/77869433798.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/2243516457.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/32173632392.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/32498978780.pdf
    • https://cdn.shopify.com/s/files/1/0436/8095/6569/files/61375575906.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/xodopofe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6231/2616/files/dutuxavasajasemadi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4542/8122/files/78597020778.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8068/files/ladef.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/49144595901.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008317.bin
f185ce8af08a841dbf47d163ac7c9599c6c67807c6ea6de7b9f13728981c47ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8317 4928 bytes
font_01_sfnt_off000093ee.bin
2169b75ce1f5605da5e4cf5ae8abd0bc5dcf48532b92d88c75b9a1308bd6947e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93EE 10668 bytes

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