Malicious PDF — malware analysis report

Static analysis result for SHA-256 1445d4948e3e5ddf…

MALICIOUS

PDF

34.2 KB Created: 2020-08-26 02:16:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a0883e8016ded06a30d52a73f7022a7 SHA-1: 7fd3cc3204ede360f60c7bbd15017fb9e27f935b SHA-256: 1445d4948e3e5ddf32a1d31df2bec124500d4985888eba9169bae5ca8279d016
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as free downloads, but they redirect to a malicious domain, ttraff.ru. This infrastructure is flagged as a redirector and part of a link farm, indicating a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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=fundamentals+of+physics+extended+sol In PDF document text
    • http://sipofire.alwaysgrowingyoga.com/uploads/1/3/1/3/131379945/8925529.pdfIn PDF document text
    • http://jeredide.bellairsfiberfarm.com/uploads/1/3/0/7/130739553/6fbb8a44c.pdfIn PDF document text
    • http://jogut.finnegansfieldsgypsyhorses.com/uploads/1/3/0/7/130775818/8705483.pdfIn PDF document text
    • http://files.mrbuttsushistory.com/uploads/1/3/0/7/130739232/189207833ddad8.pdfIn PDF document text
    • http://vilujov.showinglove.org/uploads/1/3/1/4/131437412/2274862.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/1/0431/3546/7669/files/89771658487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4061/1226/files/33066584472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5108/0090/files/rokuligu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1283/2932/files/anatomia_fossas_nasais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/warhammer_40k_8th_edition_core_rulebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2204/8667/files/singular_and_plural_noun_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1324/2005/files/muwunobimilumunadosiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/sumuzubalaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zeranosorijajigafa.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 6

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_off000048c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48C8 5424 bytes
SHA-256: dd147647899408de43d2a85604c6e14455b8093322d1aaf5e955fb3f63f19767
font_01_sfnt_off00005b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B26 9628 bytes
SHA-256: c29ce693877f1293ad5e76fbb175e395f03542c3b66e55e3b8f4f9fb3a9c3ed7

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