Malicious PDF — malware analysis report

Static analysis result for SHA-256 8851945e8b2e91be…

MALICIOUS

PDF

51.9 KB Created: 2020-08-18 16:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ad20cea2cd701ac91c701afd6d4cb3a SHA-1: b9a3f20fd1de4dab3d65a5028060a9341aedaa38 SHA-256: 8851945e8b2e91beccd75ddb87024652818d6979df7635e4dd2aaadd2a4540d5
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found in the heuristics. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or to download further malware.

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=amman+hit+songs+tamil+free In PDF document text
    • http://files.northernwhaleband.com/uploads/1/3/1/1/131163851/lafefodosi_morakakedepuj_bejabetug.pdfIn PDF document text
    • http://files.ashlandcountytowninsurance.com/uploads/1/3/0/8/130873851/3588413.pdfIn PDF document text
    • http://jupox.bamboolearners.com/uploads/1/3/0/7/130774978/f389c6deb8faa2.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/1/0434/6534/3126/files/14475603436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1230/7618/files/jebamogavimab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1478/1088/files/codigo_de_capacitores_poliester.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/baraxoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/rolarib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/escoffier_cookbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9653/9290/files/bellator_live_stream_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/zomakamemigadonuseromuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5057/3719/files/rororugab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1985/files/muguzulutolabiser.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: ashlandcountytowninsurance.com 4 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_off000087da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DA 5172 bytes
SHA-256: abe19c91a25dfb19a09643389ed0d903207c201055e5bb9e16b84a97330de090
font_01_sfnt_off0000993d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x993D 13144 bytes
SHA-256: 8e9ce39affe1d1a0367758b842c7f0bdb5f6e1292b716b62919aeeeeb0088c8a

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