Malicious PDF — malware analysis report

Static analysis result for SHA-256 917923302b44f98b…

MALICIOUS

PDF

70.5 KB Created: 2020-08-09 03:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9388fe37654afe2ff3e80a0d7cf96d7e SHA-1: c01b816328c349b026935e85a8fefe2b93f75c29 SHA-256: 917923302b44f98b33ab80167dd4bdaabb1a206b4a5ebf3aff6d9d4e801cad42
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=types+of+metal+casting+process+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting the primary purpose is to redirect users to malicious infrastructure. The file was generated using wkhtmltopdf, a common tool for creating PDFs from web content, which aligns with the link farm strategy.

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=types+of+metal+casting+process+pdf In PDF document text
    • http://files.imprintmarketing.com/uploads/1/3/2/6/132695388/ranosikanurar.pdfIn PDF document text
    • http://files.jeromesbistro.com/uploads/1/3/1/4/131437862/2892613.pdfIn PDF document text
    • http://files.vetmedtrail.com/uploads/1/3/0/7/130775698/xeriwuluwevujim-gisoxoxisokeze-wugomefinozogo-wewijegajekoli.pdfIn PDF document text
    • http://rerepis.youarethesalt.org/uploads/1/3/2/6/132681670/pejelifofakin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5254/7739/files/20552568088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8150/4670/files/46487730539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/1381/2903/files/john_deere_214_parts_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/71418521454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9547/2794/files/product_business_plan_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0437/7757/files/best_apologetics_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/company_presentation_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/zoxutapevuzuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4541/9173/files/safiduzegafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/fegasabatexaguwedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6412/1752/files/nuderuvokolamozegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9980/6113/files/pioneer_sp-_pk52fs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/acronis_bootable_media.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C4 5524 bytes
SHA-256: 600a36ca2df195e4bdc43c90c099da90ce74d004df84579573f1a7bcff2b82e9
font_01_sfnt_off0000e97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE97C 10304 bytes
SHA-256: d228b82d61f059f718f33f9a2fe82038a0e59c4f4f426ad952e61e7cede4bf93