Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d6c35ad986dd07a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-04 12:27:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 330d494bdd35e0aeef72791262e6b4a6 SHA-1: b4e03f24989a321c5094de8d49f53897fa1794db SHA-256: 5d6c35ad986dd07ad0919be98358f922ffda69bfe6ba0d0262f035c9538183f1
194 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to appear as legitimate downloads, but they redirect to malicious infrastructure, specifically a redirector at 'ttraff.com'. The document body and embedded links suggest a phishing lure for educational materials, likely to trick users into downloading further malicious content. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead users to harmful sites.

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=allen+test+series+for+neet+2020+pdf+download In PDF document text
    • http://files.aghaa.com/uploads/1/3/0/8/130873855/175ce992.pdfIn PDF document text
    • http://files.justguystravel.com/uploads/1/3/1/4/131406558/efa8f24fa.pdfIn PDF document text
    • http://files.historyisthehook.com/uploads/1/3/0/7/130775888/sopexazidunowi.pdfIn PDF document text
    • http://limew.casualcorvettescsra.com/uploads/1/3/1/4/131453278/zowemaxeg.pdfIn PDF document text
    • http://files.mazi-reisen.de/uploads/1/3/1/4/131406352/mobamawulujebuko.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/1/0431/9785/7954/files/66601048661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8675/7536/files/bronchiolite_oblitrante.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5448/1054/files/kesorazifukovomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/gumonisulebegunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/60966819629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6997/9289/files/37474852091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/birizakidunupujudexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/lemilozokelikilejime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/fulutorukoje.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 7

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_off00006aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA9 5392 bytes
SHA-256: 46dd2538283af64f55682f62fa77eac223db598f1d9940ff1d6f7cf9d146fa04
font_01_sfnt_off00007d1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1E 10568 bytes
SHA-256: e0975d2b743af3ad22a500190bfb611d6dfe1e7f4340a93c0ebd85420ce76c5d

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