Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ae16a67651de76…

MALICIOUS

PDF

58.4 KB Created: 2020-08-08 13:08:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a0c0f0579368d9e6e04907f00f75d0b SHA-1: 0131bed473ecba711f16ca0b6d115e1f94d09511 SHA-256: d6ae16a67651de761d2fba9632f46b710a6345cd752f7fdd74c19e4a32212e32
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=naca+airfoil+nomenclature+pdf, which is likely intended to lead the user to a compromised or malicious site. Another embedded URL, https://cdn.shopify.com/s/files/1/0433/9928/2845/files/meturuw.pdf, is also present, though flagged as benign.

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=naca+airfoil+nomenclature+pdf In PDF document text
    • http://kuzuge.raort.net/uploads/1/3/1/4/131482975/bikelezelig.pdfIn PDF document text
    • http://files.thegodmotherdesigns.co.uk/uploads/1/3/1/3/131379034/vigomakidemi-getezubofiguv-nelemoz.pdfIn PDF document text
    • http://files.anjoybaskets.ca/uploads/1/3/1/3/131383649/3120355.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/1/0433/9928/2845/files/meturuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4754/9088/files/approach_method_and_technique_in_language_teaching.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/kupokopafetuxasuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/suvulojamudowiruwovepifos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/68135366879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/alfa_laval_separator_instruction_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/31336987044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1901/0201/files/87412198248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/53660781234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/30588774233.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EA 5092 bytes
SHA-256: 11d36d1b7d191cf709ce16f2bfc8d5018c2932f9245e6fa2b9f928b16e6f51c0
font_01_sfnt_off00009828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9828 15092 bytes
SHA-256: e824b4592ff1a9290fc61c2a5d0cfd127446f077c42e78835ad9ac7436a0d1e3
font_02_sfnt_off0000c7d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D2 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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