Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a6aef98f2e26b4…

MALICIOUS

PDF

44.2 KB Created: 2020-08-14 15:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95af0ddd70ebee0fa37013b448bb0032 SHA-1: b34f862609425a8b23119a79341b9be073e1d6c9 SHA-256: b7a6aef98f2e26b49aca624e2cbcfc851b6580aa2a23730a7421f1a0b2f9fc01
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to 'https://ttraff.cc/pify?keyword=vce+exam+simulator+2.+4.+1'. This indicates a social engineering lure, likely to deliver a payload or phish credentials. The document body, though heavily obfuscated, contains references to 'vce exam simulator 2. 4. 1', reinforcing the lure. The presence of numerous external PDF links suggests an attempt to manipulate search engine results or distribute further malicious content.

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=vce+exam+simulator+2.+4.+1 In PDF document text
    • http://doxoriv.mrmyrtuesclassroom.com/uploads/1/3/1/4/131438079/4937887.pdfIn PDF document text
    • http://ripowibir.officeformations.com/uploads/1/3/0/7/130776262/pikegonajekini-fejasesopawo-xekamifivewiso-tujofozoko.pdfIn PDF document text
    • http://files.susangaylord.com/uploads/1/3/0/7/130739265/bodagatemevozis.pdfIn PDF document text
    • http://nafimu.christianhealinguk.org/uploads/1/3/0/7/130739430/komovakolefukeral.pdfIn PDF document text
    • http://files.oliveministries.org/uploads/1/3/1/6/131607374/wedati_pagofiworow_wubulefo_vugewetebu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/lovilibubijetaxilipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/building_plans_with_dimensions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/63344847278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2707/1127/files/koraxejokumiloseburisur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/moriba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5522/6773/files/node._js_tutorial_step_by_step.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0316/2263/files/important_constant_values_in_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0868/7269/files/dukirijetaxazojub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/goxitukafilofovorovuduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/introduction_to_genetic_analysis_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0502/4168/files/mowofawunoxinixupulut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4737/7301/files/handbook_of_cathodic_corrosion_protection_third_edition_download.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000573b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x573B 5280 bytes
SHA-256: 226059c4a8810e154c8fc7d939af22409766bd7907a5c8cbdb068773dd496a7e
font_01_sfnt_off00006919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6919 7548 bytes
SHA-256: b6f98a20a16fde91d36659369d90c1c3b3f469697dc0d6af64edd0ae39d6054e
font_02_sfnt_off00007dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD0 11088 bytes
SHA-256: 5e74ac1a58352094a5a69194bc0a8239a434a5a73baf5ea3dafcfb18e13f7e96