Malicious PDF — malware analysis report

Static analysis result for SHA-256 7133f8aec42ca942…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 01:06:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34144183eda2422337215d3518101cd3 SHA-1: 7c2634abb7e507c4d8e9dda9a6a477e73869dea7 SHA-256: 7133f8aec42ca9426d46863703d4aaee5ce64abf7106e23c1e2bf8b8d9c02c32
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and contains multiple heuristics indicating malicious intent. It features a link farm with 30 external PDF links, many pointing to a redirector service (ttraff.cc), suggesting a phishing or malware distribution scheme. The document body, though partially corrupted, contains a URL that is also present in the link farm, reinforcing the malicious redirection 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.cc/pify?keyword=partes+de+la+celula+bacteriana+pdf In PDF document text
    • http://binad.leratolefafa.com/uploads/1/3/2/6/132696323/fb8fab5bea32e5.pdfIn PDF document text
    • http://pizoxujir.dumassevents.com/uploads/1/3/2/6/132683169/zoguf.pdfIn PDF document text
    • http://files.ryesnextchapter.com/uploads/1/3/0/7/130776264/pufinaluloze.pdfIn PDF document text
    • http://files.iowamavericks.com/uploads/1/3/1/0/131069992/521b1.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/1/0466/7742/6341/files/guweniginifudazup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1729/0407/files/install_mtg_arena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5053/9940/files/define_noblesse_oblige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5522/6778/files/maine_highway_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4023/files/bedutera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/79392998010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/albiceps_tarantula_care_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/lawolilokofepimanel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8993/5003/files/29546608496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5165/5076/files/kixovopadel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3100/1250/files/aurelio_mejia_mesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/49961658069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/mitudifipapavefixonarogum.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 3

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_off0000691d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691D 5288 bytes
SHA-256: 497999c7d83f9fe40642260e5b0fde1251516180f9c3e3651d718980b58bc750
font_01_sfnt_off00007b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B15 10560 bytes
SHA-256: affe90265590522d37976eb6b32d9f0863b941960ccaba772be4eca47a7a387b

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