Malicious PDF — malware analysis report

Static analysis result for SHA-256 35c723f1e19d5a98…

MALICIOUS

PDF

40.2 KB Created: 2020-08-22 01:55:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e218fa839d0abcc16cca74a11b9ac9f6 SHA-1: 9e7ea8edc5c82b50f429f96b7b1bf1a98f28f13a SHA-256: 35c723f1e19d5a982f9075a5ef43f96959734837057bc1ade3de0bcc723811b8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as educational material, specifically targeting 'ncert neet biology book'. The ML classifier strongly flagged this PDF as malicious. The presence of numerous external PDF links, many pointing to Shopify domains, suggests a link farm intended to obscure the malicious redirector. The primary malicious IOC is the redirector URL: https://ttraff.cc/pify?keyword=ncert+neet+biology+book.

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=ncert+neet+biology+book In PDF document text
    • http://files.vickilynnsboutique.com/uploads/1/3/1/4/131406806/wirosivivatizu.pdfIn PDF document text
    • http://povuwidu.theletterkstore.com/uploads/1/3/2/6/132681337/2289834.pdfIn PDF document text
    • http://files.bond007band.com/uploads/1/3/0/7/130738806/navetimuvopev_sezugasa.pdfIn PDF document text
    • http://kedopem.jewelrysalehub.com/uploads/1/3/0/8/130814328/627551262994bea.pdfIn PDF document text
    • http://files.4assange.info/uploads/1/3/0/9/130969830/1075730.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/accountancy_project_for_class_12_cbse_guidelines_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6213/1869/files/49101987375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/5735329367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/64815671302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/fewifokulofulugisuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/xawoxugixukozulapolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3157/6231/files/wetherspoons_vegan_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/big_little_farm_hack_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2392/5402/files/73500937051.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54AE 4852 bytes
SHA-256: 4ee840fbe749d4ca1177f2bc3f26c3048cf194d40aaf167dc2d0b3b43a09acfe
font_01_sfnt_off00006550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6550 9996 bytes
SHA-256: b1776d0406f3e9103b314ad23695401b1f97f2d79ff6f5462aedf42d1decd1c8
font_02_sfnt_off000087b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B6 3060 bytes
SHA-256: bb965ea0515e7499bb47638dd5c820c8824ea93d586ac0d8f4a8f758a0d32bc6

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