Malicious PDF — malware analysis report

Static analysis result for SHA-256 86027add9482c8e2…

MALICIOUS

PDF

50.7 KB Created: 2020-07-31 17:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d0ace55942e1d5935b832c52da726c3 SHA-1: a871b9a332f920bd92ecab783add6e620024a802 SHA-256: 86027add9482c8e201a8d1554b3e40cc057e64db3e0e0a4902f9f8e8c07c177b
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, suggesting a phishing or redirection scheme. The presence of numerous links to other PDFs, some with numeric slugs, indicates a potential SEO link farm designed to lure users. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lead users to malicious content or further compromise.

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.ru/pify?keyword=the+magician+king+lev+grossman+pdf In PDF document text
    • http://files.thepathofservice.org/uploads/1/3/1/4/131407849/tokigedut.pdfIn PDF document text
    • http://files.gypsychicks.ca/uploads/1/3/2/7/132710763/dozozuxoji_wenumu_dajesezili.pdfIn PDF document text
    • http://files.rewalsarsponsorship.org/uploads/1/3/1/3/131379443/xevovewub_kiten_ziruxad_wopikirul.pdfIn PDF document text
    • http://files.katherinemgjones.com/uploads/1/3/2/7/132712383/nobomedijevato_fajexobodelaga.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/1/0434/3519/6566/files/33863956830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2562/1404/files/wamasewiliduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/61402936544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4008/6933/files/77349524644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7423/8102/files/12777895271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4452/7525/files/buwadaredubife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/menugisori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/95422175616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5388/2280/files/patufidigox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/4905434134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6169/8969/files/75881404174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9779/2420/files/66939734826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/university_of_waterloo_campus_map.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_off000087f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F8 5640 bytes
SHA-256: 0a580e8a0c3c949d152a56e0375cfcc5ea3bb9f634aba5ad9a33339d7bdce9a0
font_01_sfnt_off00009b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B06 10060 bytes
SHA-256: be43e189e6cbe82186010403f13a1b2a68899e1100e7f5936d545b8b8066850e

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