Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b1a51d9a328d3f…

MALICIOUS

PDF

47.5 KB Created: 2020-08-07 19:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f104370c248e594d167e179eabaa1561 SHA-1: 74549806c9fea9d50fa91e7b52c85a4190c3fa10 SHA-256: 79b1a51d9a328d3f46424f9e6e141b816cc5a713324e9a4b789953fbaa69cafe
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on domains associated with SEO link farms and redirectors. The primary malicious link, 'https://ttraff.com/pify?keyword=aluminium+casting+defects+pdf', is identified as a redirector to malicious infrastructure. This suggests the document is designed to trick users into clicking through to potentially harmful websites, likely for phishing or malware distribution, leveraging a lure related to 'aluminium casting defects'. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.com/pify?keyword=aluminium+casting+defects+pdf In PDF document text
    • http://files.bellsmansion.com/uploads/1/3/0/9/130969454/tonasinafelesog.pdfIn PDF document text
    • http://didutila.thefilmscientist.ca/uploads/1/3/1/6/131636719/fapopixax_misadisemoxilox.pdfIn PDF document text
    • http://files.skycruiseandtravel.com/uploads/1/3/0/7/130775156/mutoweximononu-puteposelo-majibanarabipo-nakurosejexav.pdfIn PDF document text
    • http://files.ryanswanson21.com/uploads/1/3/1/4/131437949/bototujubokaba_funipajegen_loroxej.pdfIn PDF document text
    • http://files.pennybrumbaugh.info/uploads/1/3/0/8/130874489/aca00a2.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/1/0428/5900/4070/files/active_and_passive_voice_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6953/6411/files/zojoxilimoraruma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/26316047959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5461/files/kujalewawejur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0274/9347/files/water_resources_engineering_mays_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/asperger_en_adultos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8316/9943/files/90076974567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/kovopemow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/26253141949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3242/0264/files/22737084112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6544/1430/files/49616029483.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C82 5368 bytes
SHA-256: 84ececd4e4026b75f235d64a81b7302e4fa1744b58985b61251cf9b57b4769eb
font_01_sfnt_off00008ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EBD 10056 bytes
SHA-256: eb9e4969e0bb628d193d026752124e3fe4c4d67571f9f77ed71fec778a5a164d

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