Malicious PDF — malware analysis report

Static analysis result for SHA-256 2318c3c9bb8d7ce4…

MALICIOUS

PDF

39.7 KB Created: 2020-08-21 02:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a752d7a4e2e0597976a78f8aef3b1927 SHA-1: 9fc7c5a4608619d717e0a9f5b9854efd74b025fd SHA-256: 2318c3c9bb8d7ce403ce7a150e6b426879d311da9d5044595ce8f50a88e11abe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Bible faith study course pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. 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.cc/pify?keyword=bible+faith+study+course+pdf In PDF document text
    • http://files.lovespellsaustralia.com/uploads/1/3/1/4/131483002/wofenugop-musirazotasa.pdfIn PDF document text
    • http://files.authorlynnburke.com/uploads/1/3/0/9/130968996/c85d1dfd8fec96.pdfIn PDF document text
    • http://zetipor.kansaspoets.com/uploads/1/3/1/1/131164250/6232448.pdfIn PDF document text
    • http://wadowadu.pratermusicfest.com/uploads/1/3/2/6/132695615/vukowoguwa_kagimaremajerid.pdfIn PDF document text
    • http://widigubiw.hormoneandwellnesssolutions.com/uploads/1/3/2/3/132302780/basegepam-kujozunad-rojikidinozoda.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0559/files/pabirofuzawewowigubiwitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4900/files/78796242846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6645/6224/files/77796875538.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/kuzigesava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/antiepileptic_drugs_classification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7124/2391/files/witupibobebin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/asphalt_paving_equipment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6844/1254/files/xuwifapox.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F0D 5308 bytes
SHA-256: 062ffa69354f34b17232b22443b85309967129745f252651cd3e16910ee87d6e
font_01_sfnt_off00006129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6129 10108 bytes
SHA-256: 43786ea3ae0f3f110d285c415abfdf9f6bfc222f8c7c452b4c3a6444d6999195
font_02_sfnt_off000083dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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