Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abd3ce65b71ebed…

MALICIOUS

PDF

51.8 KB Created: 2020-09-11 22:32:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02e82bf7411cc25f0996fbb22b2fb168 SHA-1: c0cd89684cd5fc03a1eebe02f54ef578da9baca0 SHA-256: 0abd3ce65b71ebed32eee48ad73c7ac680d37a8d782ec2b0185c9a86965ce25b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF files, suggesting a link farm or redirection scheme. 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.ru/wb?keyword=poe%20purloined%20letter%20pdf In PDF document text
    • http://rovovebo.amosaustralia.org/uploads/1/3/0/7/130738870/5409568.pdfIn PDF document text
    • http://koveso.clintonpahistory.org/uploads/1/3/1/1/131164077/9817023.pdfIn PDF document text
    • http://wubelutev.hardawayart.com/uploads/1/3/1/8/131856439/5317154.pdfIn PDF document text
    • http://files.mariejoseehullcounselling.com/uploads/1/3/2/8/132814387/dowejovomepukovilobo.pdfIn PDF document text
    • http://files.danamalart.com/uploads/1/3/1/4/131437770/vuzijibiva_weromevuvop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/d38238_f7b5459d9da846ceb5995a62f8cf0884.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1a1092_7033ed09cfc443219585b84c158dabf2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c068f8_30d47d3d5fbb498dac07ebe77db0862c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_0e273e18c1004126acd85c1c5cee17c8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b444d4_586925db0d004e53a53580af37e7e6c4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/icao_annex_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4201/1293/files/bativewusigalezaxidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7795/0870/files/female_version_of_earl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8483/1134/files/sunshine_coast_daily_fishing_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7317/4693/files/precalculus_algebra_and_trigonometry.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE8 4648 bytes
SHA-256: 17786b8e24f15dbadc6db51842670fc3f970e6753fcaaf578731cbed38afbc51
font_01_sfnt_off00009ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC5 10452 bytes
SHA-256: c4e51bea96ee63c6a8f8cbb3f65cc3b4b0b6cfdddec04a64d8bd5c90772382bb

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