Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f46ad1b837f584…

MALICIOUS

PDF

41.5 KB Created: 2020-08-06 01:59:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 659f9d0c72dabb1c75d0b373c28e4f91 SHA-1: 7c1949539c97256510e38db016717d473d19ce2a SHA-256: 90f46ad1b837f5843d33d9580569fdb31552d5954aebcdbb39052548c62b0ec8
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at https://ttraff.com/pify. The document body, though heavily obfuscated, contains text related to 'best high school biology textbook pdf' and the redirector URL, suggesting a lure to trick users into clicking the malicious link. The presence of numerous other PDF links further supports the 'link farm' heuristic.

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=best+high+school+biology+textbook+pdf In PDF document text
    • http://files.rachaeleggebeen.com/uploads/1/3/1/4/131407144/duxotamufufi-pigedekaxaga-sakigibiruw.pdfIn PDF document text
    • http://xazala.justinmikos.com/uploads/1/3/1/4/131452922/demedevexeke.pdfIn PDF document text
    • http://nikafujo.naturallynorny.com/uploads/1/3/0/7/130776791/b93540b10.pdfIn PDF document text
    • http://files.demornewarrenddub.com/uploads/1/3/1/4/131409170/dakodup-simegi.pdfIn PDF document text
    • http://files.tomokeefe.org/uploads/1/3/1/4/131437669/d050e5f.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/1/0435/7577/1304/files/54033803703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3707/3314/files/wikowedidorage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0099/files/dipudotabenitib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9606/3643/files/english_word_search_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6999/7207/files/33736147193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7969/5526/files/chris_rock_kill_the_messenger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2891/2040/files/74206192843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/16984224269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4633/8709/files/sadeperojatoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/agenda_de_boda_2020.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_off00006231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6231 5536 bytes
SHA-256: 0bffcacf2624433062f26763487611976fc43cadb943c7c534ca6b47aa2b0d04
font_01_sfnt_off00007521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7521 10768 bytes
SHA-256: 09977a927feb5c132f6b42a9cd0955ee2a44a910b624764b1a06f32fb2817e73

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