Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae20498fa6adf855…

MALICIOUS

PDF

49.6 KB Created: 2020-07-31 23:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 759f4548856ebdc73a370838fb1d9de6 SHA-1: c4ed4ea4ce23498b6e5bec5551cafeb044ece8a4 SHA-256: ae20498fa6adf855fe3d3dc89cb4ba7e914a356ba6f9a1ee394a9f28a10ddf12
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm designed to redirect users. One of the primary URLs, 'https://ttraff.ru/pify?keyword=john+matthew+chapman', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the intended destination. The presence of numerous links hosted on cdn.shopify.com, while individually benign, contributes to the overall deceptive nature of the document.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=john+matthew+chapman In PDF document text
    • http://files.christopherkrieg.com/uploads/1/3/1/6/131636806/sixil_xasomomuvavijim.pdfIn PDF document text
    • http://files.stcloudchurchofgod.com/uploads/1/3/1/4/131453615/gofewinuxodo.pdfIn PDF document text
    • http://files.holidayhouseamalfisorrento.com/uploads/1/3/0/7/130775982/xujakorimasuvijud.pdfIn PDF document text
    • http://files.xofitnessstudio.com/uploads/1/3/1/3/131383648/0c6d0c493fd3d8.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/1/0432/4625/6295/files/45704575938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4275/9071/files/xulujivifow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/kekowotivexemanumafupugax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/22919095483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6141/9927/files/25314021704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/sapuzotejil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3142/0314/files/gavumibuxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3766/files/bimade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2950/2874/files/rufoluzetifesosabazow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6559/6321/files/74573963687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1160/files/muwuzoxemejupuduzanosun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7525/5972/files/4616861290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/973561160.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BC 4688 bytes
SHA-256: 0d34bad205e4f54aaa96fd9d508dc7d6a0fc3502df0d971549e52588d6232b29
font_01_sfnt_off00008582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8582 11172 bytes
SHA-256: 45c7c70c6a879c6f1455af93e23391daa81bd05e397b717034f51faac30c8a03
font_02_sfnt_off0000ab12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB12 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230