Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf9cdf82d9fb117…

MALICIOUS

PDF

39.4 KB Created: 2020-08-23 22:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8479cb6ad9e7389401f55b8d8f589c26 SHA-1: cb87ee13e0162a98a57ed6e2268fd0aa6cf06867 SHA-256: ebf9cdf82d9fb1170b932251812cd237cc856aa2f7f21d6c2475e107e17aa2e6
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm, with numerous links hosted on 'cdn.shopify.com' and other domains, suggesting an attempt to create SEO-optimized content for malicious distribution. The presence of a 'download button' heuristic further supports a lure-based attack. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=irregular+past+tense+verbs+practice+worksheets In PDF document text
    • http://gowefib.thorsonpto.org/uploads/1/3/2/6/132696067/9dc36ecc91.pdfIn PDF document text
    • http://puwef.eastshorecf.com/uploads/1/3/1/8/131858685/73022ce.pdfIn PDF document text
    • http://ditivimid.bostonroundtable.org/uploads/1/3/1/4/131482992/nezigolija.pdfIn PDF document text
    • http://files.lucernelyme.co.uk/uploads/1/3/0/8/130814286/kifinogi_kejevowazudadem.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/1/0432/3727/7855/files/esophageal_candidiasis_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4455/0294/files/bakekakadazebaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5261/3277/files/steam_fatal_error.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5941/1094/files/vipazikarufoluru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8581/5194/files/lil_wayne_lollipop_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufabolip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3144/5156/files/free_manuscript_handwriting_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1087/3750/files/chattanooga_choo_choo_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34993807018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4498/6280/files/imperialismo_y_expansin_colonialista.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8524/1245/files/14809633483.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B75 5488 bytes
SHA-256: 367652e9e05fada14a44899ff34ddaf2747d4284441cbb0254a6dc32931a8821
font_01_sfnt_off00006e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E26 10120 bytes
SHA-256: cfe8a32dfcf0b14fb29a065a9d7a8727efddfaf7177f69c02abfc3b18ff65b04

Open this report in the interactive analyzer, or submit your own file for analysis.