Malicious PDF — malware analysis report

Static analysis result for SHA-256 4891361060941590…

MALICIOUS

PDF

50.3 KB Created: 2020-08-13 22:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 649c14f98ebe38fc71c25dc9d112a53a SHA-1: 78e859cb037f9e035927ac87049b99906228115f SHA-256: 4891361060941590f0f5721ceb5c8dec36ddb1ea5e9e6c5589343a48b6d0bbae
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. Crucially, one embedded link redirects to `https://ttraff.ru/pify?keyword=fssai+answer+key+pdf+2019`, which is flagged as a malicious redirector. The document body text also contains the same lure, indicating a social engineering attempt to trick users into clicking the malicious link.

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=fssai+answer+key+pdf+2019 In PDF document text
    • http://files.jonathanepley.com/uploads/1/3/0/8/130813985/4850533.pdfIn PDF document text
    • http://files.musicalkitestring.com/uploads/1/3/1/1/131164476/8921238.pdfIn PDF document text
    • http://files.allthingsdunham.com/uploads/1/3/0/7/130739510/5015553.pdfIn PDF document text
    • http://files.alrajabahrain.org/uploads/1/3/0/7/130775292/rilinejilibul.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/1/0438/4063/5042/files/85224840377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/27238040439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0077/4307/files/mechanical_behavior_of_materials_meyers_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/20633881603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/vumesererejelatitepapim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8777/4367/files/manowosusukewoxufazilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/67329414420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/milapizesomukojafifiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6521/2066/files/rarojolezipogewazorame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6615/5430/files/jomutimibumaxisoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/wuduwiberedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4783/6065/files/malos_habitos_alimenticios_en_universitarios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/4483/6252/files/namaz_ka_tarika_download.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_off00008593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8593 5696 bytes
SHA-256: 20c18575a9ca15308edee9c85512c25c8028748f324ceac1285b284324108131
font_01_sfnt_off00009927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9927 10384 bytes
SHA-256: 81b7bd873b12a395352a2f1360a81a96b0b23c8c757dd2aaf85fefb3eb49b4e8

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