Malicious PDF — malware analysis report

Static analysis result for SHA-256 45228b800fa38954…

MALICIOUS

PDF

43.4 KB Created: 2020-08-08 02:22:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57ca12fbdbdf5b8d2782e11609870639 SHA-1: d171406d6ffc8f240ff1320e1f56d62c7100a45f SHA-256: 45228b800fa3895445bd0e7adef781720ae4f31e794a8121ebac2d24010377de
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the embedded links, https://ttraff.ru/pify?keyword=cell+cycle+pdf+2020, is identified as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of a link farm and a malicious redirector strongly indicates a phishing or redirection attack.

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=cell+cycle+pdf+2020 In PDF document text
    • http://files.yiboneh.com/uploads/1/3/1/4/131409009/vowuze_kowagimasok_tisopubimib.pdfIn PDF document text
    • http://nitixogud.iamrockysworld.com/uploads/1/3/1/1/131164239/fododibonofu-somivatemuk-xozijubor.pdfIn PDF document text
    • http://files.rmbscenic.com/uploads/1/3/1/4/131483685/misaw-xesaxinekuxa-nikonozelemip-mipakat.pdfIn PDF document text
    • http://files.easychordz.com/uploads/1/3/1/1/131163897/9530669.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/1/0430/8451/3434/files/lirefomidokuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/gotta_go_fast_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/rsiliation_de_bail_commercial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/34471038456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/51843398896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/robupidoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/gumaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39720928980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2584/files/cambridge_checkpoint_science_workbook_9_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9565/4554/files/22955986085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/mercer_weighted_grade_calculator.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 5

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_off00006cec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEC 4944 bytes
SHA-256: f8bb9cee292b6108d837131ddbb1f249431ca145f51fe3c9732300b183d1fa59
font_01_sfnt_off00007de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE8 10260 bytes
SHA-256: 07f4ee3b069a56e8bb3da4b3558176f11a29aff07a6b1f1fce81035f4b4b0d23

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