Malicious PDF — malware analysis report

Static analysis result for SHA-256 8993057beb9fbefe…

MALICIOUS

PDF

66.4 KB Created: 2020-08-14 06:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9070d2427aac99c871a2345a8785be0a SHA-1: 3639b18e947c036e40dddd7d1518a91a60f60235 SHA-256: 8993057beb9fbefe435b58e1f0481b2cc3c4af98fbd33e4f3099a105b99723c8
162 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.ru/pify?keyword=bet365+app++uptodown'. This indicates the document is designed to redirect users to potentially harmful sites. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted, but the overall structure and link analysis strongly suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=bet365+app++uptodown In PDF document text
    • http://files.th1rdspac3.com/uploads/1/3/1/4/131437157/403649.pdfIn PDF document text
    • http://files.hart-ware.ca/uploads/1/3/1/4/131453354/16d0fa3.pdfIn PDF document text
    • http://files.azrya.com/uploads/1/3/1/0/131070920/wivep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/gst_law_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/kobuzoniduba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/backward_integration_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/faxevixifoxadidokupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/aroma_rice_cooker_8_cup_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4247/9000/files/ronupubatipajutegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7671/0563/files/systematic_biology_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/papilas_gustativas_histologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/56546597654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/14150262562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4967/files/meloluvum.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9976 5064 bytes
SHA-256: d16af924cd68a9f9b686312e295b71d95b211fbc7fbb3f02e33bbd6452b3e9e8
font_01_sfnt_off0000aab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB7 1936 bytes
SHA-256: 84daf345e21b08075a6e329eeacb0a13a0447ddcc3efc64e98a9a4ab9c6a9d9d
font_02_sfnt_off0000b3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F8 10364 bytes
SHA-256: 9fbca63db85d0f3731b026902db720b97233a3caf0e0ca4ed43c69ea734f5d4d
font_03_sfnt_off0000d7b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B5 16364 bytes
SHA-256: d7ed20e4bafe5175d1154450e049f60715abfc0e410079b1c97cae374c138cd8
font_04_sfnt_off0000ed8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f