Malicious PDF — malware analysis report

Static analysis result for SHA-256 65498c89647c4426…

MALICIOUS

PDF

39.6 KB Created: 2020-08-20 18:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8e6c0d992248acadea19ebfaf3b13f8 SHA-1: 4489b7bd5dc4106c581367ba10904e2906d01e7f SHA-256: 65498c89647c4426b195ec52c4908d8fffc37af13dec46effa44ab114d1fa950
154 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=dance+basanti+video+song++1080p'. The document body also contains text that appears to be an attempt to disguise these links as related to popular video content. The presence of a link farm and the ML classifier's high confidence score indicate a malicious intent to redirect users to harmful sites.

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=dance+basanti+video+song++1080p
    • http://files.escapeologists.com/uploads/1/3/1/4/131406807/921340.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/0721/2695/files/60617023127.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9927/files/kebufedumimabo.pdf
    • https://cdn.shopify.com/s/files/1/0439/0505/6920/files/tumaczenie_zda_z_polskiego_na_angielski_wiczenia.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/jumuzuluwofarijetekido.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10542261424.pdf
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/kagalitalugedemap.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7650/files/zamalelomejurilumukovema.pdf
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/58783491445.pdf
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/65289789395.pdf
    • https://cdn.shopify.com/s/files/1/0430/3339/5351/files/ragefebotegesajibera.pdf
    • http://bit.ly/2m1q5CM
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e5a.bin
30627f9f6f6dbbce91f84c906f0bbaeb3c3569892fcd72e4e975e77bdbbe9db9
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E5A 5488 bytes
font_01_sfnt_off00006117.bin
8b9b81b2bb0759312c819d6ac32ad15b7b0a15112cb53059565fe614079119eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6117 10220 bytes
font_02_sfnt_off000083d3.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x83D3 4324 bytes