Malicious PDF — malware analysis report

Static analysis result for SHA-256 6615bb0ed425c92f…

MALICIOUS

PDF

39.4 KB Created: 2020-09-12 17:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d3df1236b8c20bb69fc33acb8d3829b SHA-1: 83d094c9450170cff1532decf405e5f5ddf45847 SHA-256: 6615bb0ed425c92fb6b716de8593cef14b8952a0002d8d320a960e4fbf7b904a
242 Risk Score

Malware Insights

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

This PDF file contains numerous links to external resources, many of which are SEO-optimized and redirect to potentially malicious sites. The document body and heuristics suggest a lure related to 'free fillable donation receipt template', indicating a phishing or scam attempt. The presence of multiple PDF links and a redirector URL points towards a campaign designed to lead users to malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.me/wix?keyword=free+fillable+donation+receipt+template In PDF document text
    • http://files.frenchamericanbiotechspringboard.com/uploads/1/3/1/0/131070846/919cd7d490f5dd.pdfIn PDF document text
    • http://files.greenpowersystem.net/uploads/1/3/2/8/132815183/ab302cc9bf17d9.pdfIn PDF document text
    • http://zasotex.mgle-germanschool.org/uploads/1/3/2/8/132816066/178335.pdfIn PDF document text
    • http://files.omelettecafemanassas.com/uploads/1/3/1/4/131482916/1a477ed0ae8cee8.pdfIn PDF document text
    • http://files.outsideincounseling.org/uploads/1/3/1/3/131379380/xivovumedutesawogufu.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/1/0435/9605/4690/files/minecraft_dimension_ids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/0358/3125/files/30959776201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1774/0199/files/cahier_de_vacances_ce2_vers_cm1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_c84bc509c82e4486b3a31c1d0b4ac0c6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8bbd7_30f2f99f0753478bb99232832f0d641c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/6e3131_299dea60063743589e2a0ba041676f40.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7be1cd_01ec6a270b5f402f896beff25d6230f4.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_off00005b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8E 5216 bytes
SHA-256: a659a3ac63bdae19e5b741206034bbcd250c29dae98ef4b94877d8a526d1b80a
font_01_sfnt_off00006d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D37 10500 bytes
SHA-256: d5028d6f81c52ac6ebc38878e71b7f16e0da3c240a371436e045d04eb4e02e98

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