Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ebeb9513a5039…

MALICIOUS

PDF

42.2 KB Created: 2020-10-05 21:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 1a5f6d191915d0689b420e706ac8f4cb SHA-1: 2695d2089486bde1619552b711faaffc1e436eb3 SHA-256: af2ebeb9513a50390ef509bc266d876836d413a5c3d19dbdf9cf37ba76afe311
194 Risk Score

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://ggtraff.ru/strik?keyword=tiffin+motorhomes+parts+store In PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/48071923738.pdfIn PDF document text
    • https://site-1037033.mozfiles.com/files/1037033/99305656034.pdfIn PDF document text
    • https://site-1040373.mozfiles.com/files/1040373/javak.pdfIn PDF document text
    • https://site-1036823.mozfiles.com/files/1036823/vaxupasivojufixakafu.pdfIn PDF document text
    • https://site-1040104.mozfiles.com/files/1040104/nawubutokesevaxi.pdfIn PDF document text
    • https://site-1042287.mozfiles.com/files/1042287/xataw.pdfIn PDF document text
    • https://site-1041289.mozfiles.com/files/1041289/60516375402.pdfIn PDF document text
    • https://site-1040563.mozfiles.com/files/1040563/witixidoxuja.pdfIn PDF document text
    • https://site-1038547.mozfiles.com/files/1038547/viziza.pdfIn PDF document text
    • https://site-1036698.mozfiles.com/files/1036698/47092683542.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/1/0501/2275/2160/files/reedley_workforce_connection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8547/0623/files/fairfax_county_gis_jade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8162/1664/files/oskar_blues_dale_pale_ale_calories.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2605/4306/files/amelia_bedelia_online_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/30676661531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/kimesewabagojerudafon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3008/6297/files/electromechanical_power_steering_assist_reduced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/judipuk.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6781 5056 bytes
SHA-256: 2340bab13a0deccc125068488c460f86b7e04b5c43a7e5745490ee68d2e7da4d
font_01_sfnt_off00007886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7886 10380 bytes
SHA-256: 5af66befe01ce26584897ee2cb08926db25099e176775d7347604bdd930ab98f

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