Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d5bd63f30af3a16…

MALICIOUS

PDF

43.6 KB Created: 2020-08-02 03:20:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43dfca750f7def3477aee5a6ba05740f SHA-1: 86a5c5891016d66c453920dfe8bd0106d7eba95e SHA-256: 5d5bd63f30af3a16f459d2189bb6eb4eef1aa822577c745aed4948aebcfc81f6
194 Risk Score

Malware Insights

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

This PDF document contains a large number of links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body and embedded links suggest a phishing lure, attempting to trick users into downloading potentially malicious files by posing as academic resources. No scripts were extracted, but the presence of numerous malicious links indicates a high likelihood of a phishing or malware distribution attempt.

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.cc/pify?keyword=lectures+on+quantum+mechanics+weinberg+pdf In PDF document text
    • http://files.tennisunderthestars.net/uploads/1/3/1/4/131406412/b9800cb.pdfIn PDF document text
    • http://files.karenflanneryphotography.com/uploads/1/3/1/4/131482819/vinikokijuwekiwos.pdfIn PDF document text
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdfIn PDF document text
    • http://files.artbysarabardin.com/uploads/1/3/0/7/130776602/gusimorutojemuro.pdfIn PDF document text
    • http://files.zoewilsonnutrition.com/uploads/1/3/1/4/131437636/1016373.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/1/0432/1384/8733/files/bifunigivegevinak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1030/0831/files/barney_and_friends_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9776/8614/files/dezinozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7798/3653/files/zikifijipinunod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tikumakosesik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/6419308021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/76566610696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/90535637615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/dujugifevibopezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sigejorivuzogekos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7970/3451/files/39013503310.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_off000067af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67AF 5836 bytes
SHA-256: f5fa98ca6cdbe2b0975136deae054b47e6a607ffd4d33ed777c4de34074c52a9
font_01_sfnt_off00007b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B74 11240 bytes
SHA-256: 537f418548554fb8a880127145b6548aa31c055be6a80f5dc2000eb942ea5ffe

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