Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebf14caf55ca8f4…

MALICIOUS

PDF

47.5 KB Created: 2020-08-22 10:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cf3c937ca3a89688e7ab958e0bd0705 SHA-1: 8ac0a1c2fb1a5c948f5bf04402b1df006d8de5aa SHA-256: 5ebf14caf55ca8f4acc492b0b1438d04601d02b8c20598755a321bcc72ed4d99
194 Risk Score

Malware Insights

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

The sample is a PDF file that contains numerous links, many of which point to a redirector service. The primary redirector URL, 'https://ttraff.com/pify?keyword=the+squat+challenge+free+pdf', is flagged as malicious. This suggests a phishing or scam attempt, likely using the 'free pdf' lure to entice users to click the malicious link. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=the+squat+challenge+free+pdf In PDF document text
    • http://files.spartanconsulting.org/uploads/1/3/0/8/130874250/tojanodorowovifex.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/1/0435/7731/1391/files/cognition_and_emotion_from_order_to_disorder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/9415/4904/files/border_design_on_a4_size_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/atkins_and_depaula_physical_chemistry_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9788/2773/files/business_management_personal_statement_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20011772627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7752/3861/files/buramuxutazax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9453/1486/files/kajenimiwurineta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/63514452106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/blogspot_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8961/7311/files/21086269352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8841/6669/files/curb_your_enthusiasm_theme_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

Related samples 1

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_off00007969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7969 5492 bytes
SHA-256: 498eb49955457f6e2919e9964ccd68737e57debcf090cb4bf06e5c60046769ec
font_01_sfnt_off00008bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFE 11076 bytes
SHA-256: 0a67b96033d7fa0ce5e10851ef4c4303dba3ff9f0b0efd51bf037eccb807651c

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