Malicious PDF — malware analysis report

Static analysis result for SHA-256 898b78070923174c…

MALICIOUS

PDF

42.2 KB Created: 2020-08-24 15:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 39b7d929dab8cefd370c0403bece7098 SHA-1: 3f0e78197db0f278ce2c1e34eaf3077feed02f2f SHA-256: 898b78070923174cb52dcc0cd53000c4d2a93aed9e3e3edb1eb77e3a1ea18050
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL is associated with malicious activity. The document body and heuristics indicate a lure for 'edit pdf online free no signup', which is a common phishing pretext.

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=edit+pdf+online+free+no+signup In PDF document text
    • http://zotus.marcocalandra.com/uploads/1/3/1/4/131453060/rezutakotukus.pdfIn PDF document text
    • http://files.deltacouncil.org/uploads/1/3/0/7/130775109/vixawidopu_venadolimu_korowi.pdfIn PDF document text
    • http://files.abiblicalcounselor.com/uploads/1/3/1/0/131069812/fenito.pdfIn PDF document text
    • http://files.cattongrovecentre.org/uploads/1/3/1/8/131871602/3092012.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/1/0432/6542/5563/files/checkbook_register_template_free_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/61367250327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/nizatisazujewukogalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/zoxunakatixisode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1498/7674/files/types_of_compound_leaves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6903/7974/files/70252654812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1163/7401/files/juzimedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/52744078256.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
🗂 Part of campaign: deltacouncil.org 3 samples

Related samples 5

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_off00006837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6837 4956 bytes
SHA-256: 7430dc09509ef0d55c936fb9aa6da428af18d0000b1141f6a1b0a7d4777cabb9
font_01_sfnt_off0000792b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x792B 10248 bytes
SHA-256: 6c08cb4224cbf33d1d771c06568fcb5f34baa8df90381408ebfebff9fd670ff6

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