Malicious PDF — malware analysis report

Static analysis result for SHA-256 691bb76a46ffce24…

MALICIOUS

PDF

36.8 KB Created: 2020-08-06 19:24:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74b4578403050eeb7aeba756c365282e SHA-1: 6ce6c6eb8b61fa9b90540253835943d72f87cbad SHA-256: 691bb76a46ffce24b0de7dfbab329fe678cb527d932f803eb5f64345ee569430
194 Risk Score

Malware Insights

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

The PDF contains multiple links designed to appear as book downloads, but they redirect to a malicious domain (ttraff.ru). This is a common tactic for phishing or malware distribution. The embedded links and the ML classifier strongly indicate malicious intent, likely to trick users into visiting a compromised site.

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=chaganti+ramayanam+book+pdf In PDF document text
    • http://files.alexbuehler.com/uploads/1/3/2/8/132814969/7889934.pdfIn PDF document text
    • http://kovamu.campaignforcloth.com/uploads/1/3/0/7/130776407/3071203.pdfIn PDF document text
    • http://files.kharisgrams.com/uploads/1/3/0/8/130874248/vanidemij.pdfIn PDF document text
    • http://files.flalaw.pro/uploads/1/3/0/7/130738894/razorosig-jonovokarizomu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8507/9452/files/14724831379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3266/9334/files/notes_on_isomerism_in_organic_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/simapukize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/kuzonisixebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5732/2903/files/guwejusatakuviroxefidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/zerututoxoxulegagamaxetek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/balasawogixizekenivikux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/66393194156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3676/0485/files/36038645365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0700/0219/files/56864902062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/womimitomukivosorur.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 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_off00004472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4472 5244 bytes
SHA-256: 3cc28d3f22d1b06df1f79400cee2836f8eb2fb3436c2dbca6c1e340f20da01eb
font_01_sfnt_off00005616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5616 10020 bytes
SHA-256: df41b2188dc788e63dfa2655e1d40a87c1e871881fd142391ba8ea8c81d8f634
font_02_sfnt_off0000784d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784D 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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