Malicious PDF — malware analysis report

Static analysis result for SHA-256 9938759875da5d0b…

MALICIOUS

PDF

50.0 KB Created: 2020-08-14 23:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4be6797aaa5c5b2ba3ea2e4c4feb2858 SHA-1: 02c0fde87d54961275f43100fdca429d18f5c3b0 SHA-256: 9938759875da5d0be7968e64d0efd846f295d64c6911378aaa036f1bffdb8bc1
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains embedded JavaScript and a critical heuristic firing for a malicious redirector link. The document body and numerous extracted URLs indicate a link farm strategy, likely intended to redirect users to malicious content or for SEO manipulation. The primary malicious URL identified is https://ttraff.cc/pify?keyword=hollywood+reporter+roundtable+actresses+2018.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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=hollywood+reporter+roundtable+actresses+2018 In PDF document text
    • http://files.johnvukusic.com/uploads/1/3/1/3/131380031/c3ab01de1d6896.pdfIn PDF document text
    • http://xomofapa.broadwaysphotostudio.com/uploads/1/3/1/8/131856330/bejowivazaw.pdfIn PDF document text
    • http://files.ecofriendly-yes.com/uploads/1/3/1/4/131406506/4493312.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/1/0429/7120/1699/files/zokejurogobumoboretav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4532/9832/files/razafunivanufovigamamer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/8706825902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7026/6273/files/1630771114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/tipos_de_auditoria_administrativa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/vobirok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/wiranosukovazaritewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9385/9231/files/advantages_and_disadvantage_of_internet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/architectural_thesis_projects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6048/files/que_es_diversidad_genetica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4127/4521/files/undertale_map_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2117/9802/files/puwutaxafafinufubati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4507/5609/files/means_building_construction_cost_data.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2402/2677/files/cabala_esoterica.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000832d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x832D 5884 bytes
SHA-256: 541627367a209282714c3d4fc251ad846f7df61150b40066063995cd6f1f0b29
font_01_sfnt_off0000974d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x974D 10240 bytes
SHA-256: a96ff321bffc4509e9d6fb0976eb68801645d6c9afcec3a1d89ba7ce820ea1aa