Malicious PDF — malware analysis report

Static analysis result for SHA-256 c237432c65c08f07…

MALICIOUS

PDF

53.6 KB Created: 2020-08-25 04:18:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 110486b5bc59173ee7fd20bc40215527 SHA-1: cdeddb6dea83c45bc958e02791711962c9bd1e63 SHA-256: c237432c65c08f07d6b8ba09c2166369e995dc4b5e421c463e9c3f642313f0f0
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is embedded within the document's body, disguised as a link related to 'nickel cadmium battery working pdf'. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The ML classifier strongly indicates maliciousness.

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=nickel+cadmium+battery+working+pdf In PDF document text
    • http://files.crcs.bc.ca/uploads/1/3/0/7/130740612/0c7e7583.pdfIn PDF document text
    • http://files.drkatiedineyoung.net/uploads/1/3/1/4/131438567/5969535.pdfIn PDF document text
    • http://files.carnivora.co/uploads/1/3/0/8/130813325/boroxuz.pdfIn PDF document text
    • http://sosaw.futurereadyacademy.org/uploads/1/3/1/1/131163635/zesanufut.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/1/0433/6130/4728/files/latest_accounting_standards_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/homemade_dryel_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/34106044804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/83388945538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6766/2748/files/eminem_infinite_album.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6545/0389/files/fingerprinting_merit_badge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3165/0453/files/xakegeloxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/baazigar_o_baazigar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8571/6886/files/bokefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1057/7816/files/vejiga_urinaria_anatomia.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9194 5664 bytes
SHA-256: d5e2058bf111f83114033c1dc514da146e72762d2a433176cc5023773894c4fd
font_01_sfnt_off0000a4de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DE 10632 bytes
SHA-256: 860f2dc37228dfb42279cd03874649326e0bbbe21d7e677359c456571909b817

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