Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ad393e5c73d4b3…

MALICIOUS

PDF

33.0 KB Created: 2020-08-11 05:48:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d6da7a353c5b39a0dda4db8d7360047f SHA-1: cfbf4ba8d8bacb98525a0cd1a319cd66cd149260 SHA-256: 76ad393e5c73d4b378655aa180700cc19de9da980733b544ab05fcab474098fb
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to redirectors and SEO link farms, suggesting a phishing or malware distribution campaign. The primary redirector URL is https://ttraff.ru/pify?keyword=ccna+lab+manual+pdf+2020, which is also present in the document body. While no scripts were explicitly extracted, the PDF structure and numerous links indicate malicious intent, likely to lead users to malicious content or phishing pages.

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=ccna+lab+manual+pdf+2020 In PDF document text
    • http://files.wicknsudsbydino.com/uploads/1/3/0/8/130814121/josijigubajuxefob.pdfIn PDF document text
    • http://files.kskydonner.com/uploads/1/3/1/6/131607131/wedagazumexagexatit.pdfIn PDF document text
    • http://sazubu.kimdavenportread.com/uploads/1/3/1/3/131379312/vikanafos_xisexolefelu_vidafizon_lirososuxu.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/1/0430/7465/0261/files/18_wheels_of_steel_haulin_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3113/2322/files/kickass_torrent_proxy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/kenem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3081/3592/files/kudupipigenosivuligizekoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/dewoluwewugupebepawefad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3435/2548/files/zikowirasaxugulukitas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/mozimuzozixutawivoziwuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6544/1430/files/ketome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/ventral_hernia_patient_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/jogatakenevivamunis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/1935476307.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_off000043a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43A0 5344 bytes
SHA-256: 70fd103049858335f27fdf5d3f6e8265a50687e9f10a61b0f81d434379410487
font_01_sfnt_off000055ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55AD 9856 bytes
SHA-256: d288afa014c7b21c4a9bfeee843d0bf7a4282b57a4736f29ad831bead8d13421

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