Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7784e98fcc327c9…

MALICIOUS

PDF

32.8 KB Created: 2020-08-17 14:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6de23f82078178fd84b93d7a95b16be0 SHA-1: 74fde78aba89f696db137348c620d17c1a5e2e52 SHA-256: f7784e98fcc327c97ae8b11365b3a3d2edc70bcb3c96873c6215cee11745592b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=delicious+cake+hd+images, which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through a large number of seemingly unrelated documents.

Heuristics 3

  • 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.
  • 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=delicious+cake+hd+images
    • http://files.lady-arlete.com/uploads/1/3/1/4/131437601/bikomatojalevate.pdf
    • http://files.michiganelopementcollective.com/uploads/1/3/1/4/131406036/4420337.pdf
    • http://files.tummyandtot.com/uploads/1/3/0/7/130775331/7853284.pdf
    • http://files.questgolfacademy.co.uk/uploads/1/3/1/6/131636828/megujox.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/xavijuwofefuwekitufuzow.pdf
    • https://cdn.shopify.com/s/files/1/0435/8494/6333/files/64287202083.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/tratamiento_nutricional_para_cancer_de_pancreas.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/89683459760.pdf
    • https://cdn.shopify.com/s/files/1/0432/3432/8735/files/dasewevaruvimivolam.pdf
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/fibatokejaname.pdf
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/17418995005.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/repovolipirodexaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2682/4863/files/31844736088.pdf
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/xaxerewanibuni.pdf
    • https://cdn.shopify.com/s/files/1/0429/5737/3589/files/avakin_life_mod_ios.pdf
    • https://cdn.shopify.com/s/files/1/0428/9721/1551/files/ccna_1_chapter_7_exam_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/happy_wheels_full_version.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_off00004758.bin
697a90eeed5b1102e6b1ab62fcfe4f7da4f4052451d751043c656cb05be692f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x4758 5320 bytes
font_01_sfnt_off0000594c.bin
561d21033b776b425b502311d1123747678ceb86404e20644cc15a90cf35eed4
pdf-font-stream PDF embedded font (sfnt) at offset 0x594C 8636 bytes