Malicious PDF — malware analysis report

Static analysis result for SHA-256 813697ee1fc6700f…

MALICIOUS

PDF

46.6 KB Created: 2020-08-05 07:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bde5cb05bfe0284913dacf134d14723f SHA-1: e58277f136fbba9c09ac6407e61ca78273cce7b5 SHA-256: 813697ee1fc6700fd1a3005a5c34b181e610c987e5415663558eddc70be43094
194 Risk Score

Malware Insights

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

This PDF document utilizes a link farm and SEO redirector to lure victims with a fake educational download. The primary malicious URL identified is https://ttraff.ru/pify?keyword=ncert+chemistry+book+class+11+pdf+free+download, which is known to host malicious redirectors. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

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=ncert+chemistry+book+class+11+pdf+free+download In PDF document text
    • http://files.macdonaldcounselling.com/uploads/1/3/0/7/130776065/renomodaxabopa-pudaradoje-ripuxuvegikowu.pdfIn PDF document text
    • http://files.sarahitkin.com/uploads/1/3/1/3/131398244/48e155c7e47b2.pdfIn PDF document text
    • http://files.littleworldeq.com/uploads/1/3/1/3/131384468/vometawafe-pokujewiruxos.pdfIn PDF document text
    • http://jodapu.janeheyesart.com/uploads/1/3/1/4/131407406/govokumirejiwago.pdfIn PDF document text
    • http://files.seetheworld.tours/uploads/1/3/2/8/132815961/bawifutopite.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/75106719471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6413/0725/files/62103272278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/mw3_mod_menue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3127/2351/files/rorulavilupuvaxasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6525/2771/files/alchemy_leveling_guide_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/67862760002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4250/3832/files/97410925835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9842/2934/files/juvukodawidomenepawimoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/febalibugakali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9452/2523/files/tidepurevujojazowipizaliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9257/3334/files/7172896311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/ranegobifisuxafilalaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7447/7473/files/nikozimemirij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9232/0161/files/vodilugotetawuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5597/1492/files/bekejomajuvojezexosaga.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000677f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677F 5600 bytes
SHA-256: adf7d355072e356da5112698feb333ce07c26fc7bb1b1ccbc2b869886e362951
font_01_sfnt_off00007a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A73 10664 bytes
SHA-256: e87cf019690d9722b78473bdacca8ebfa80c659e2e2abf3ee1b967ee8d2eb516
font_02_sfnt_off00009e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176