Malicious PDF — malware analysis report

Static analysis result for SHA-256 650602c35dfefd51…

MALICIOUS

PDF

58.3 KB Created: 2020-08-14 08:21:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0400fb276c8b1bbc5caaeceec1a9b0dd SHA-1: 337926193ec2a09c0130ee1a6dafeee2fb1c6ea1 SHA-256: 650602c35dfefd51ae3c00832bdd7b428bc73eca634c72b69c864019ae86a7fe
194 Risk Score

Malware Insights

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

The PDF contains numerous links, identified as a link farm, that redirect to malicious infrastructure. Specifically, the primary lure URL is 'https://ttraff.ru/pify?keyword=physiology+of+muscle+growth+pdf', which is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt.

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=physiology+of+muscle+growth+pdf In PDF document text
    • http://files.springfieldfrontiers.org/uploads/1/3/0/7/130775182/7581872.pdfIn PDF document text
    • http://files.falconandwolf.com/uploads/1/3/0/7/130739027/8742818.pdfIn PDF document text
    • http://files.clcciowa.com/uploads/1/3/0/9/130969440/vamipi_dimazodugoka_pavidufevisuzid_totilunipozux.pdfIn PDF document text
    • http://files.theindigotribe.com/uploads/1/3/2/6/132681954/vulopiva.pdfIn PDF document text
    • http://files.fellowshipforward.org/uploads/1/3/0/7/130775145/7b49cbda314.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/1/0432/7066/8453/files/dusovubusogufikenaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5404/7138/files/91494135842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7281/3211/files/94520661401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/xexereveta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/vutarapesubenutajejuke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/english_reading_comprehension_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/mutujifozodowudabore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1093/0341/files/bigewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3640/4900/files/90659967735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/banusifexep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9122/1911/files/61498130306.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 4

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_off0000a413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA413 5556 bytes
SHA-256: c5cc309b6f159d2a579220f7fe55142da286675686617a4bbcc6b31524250ae4
font_01_sfnt_off0000b6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6E6 11396 bytes
SHA-256: 7fb764aa9871d1f450de8cbe477e7c6428a24949cae2dfd0d6e6afae49fa4161

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