Malicious PDF — malware analysis report

Static analysis result for SHA-256 95b15c7eb4b65f8b…

MALICIOUS

PDF

51.1 KB Created: 2020-08-14 22:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba765f6bdcf7d4d84802c098014f6ca0 SHA-1: 41e635d5350cfd24dd48c631e483d4640436defb SHA-256: 95b15c7eb4b65f8b1173d95eefe9409aeb4197981f3b44197ee7be62ae3c511a
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector. The primary purpose appears to be to lure users to malicious sites via a link farm.

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/wb?keyword=hindu%20boy%20names%20starting%20with%20k%20pdf In PDF document text
    • http://files.jeffersonpc.org/uploads/1/3/1/4/131437513/betodijopatemi_kibeseb_nerivomibar_peroxemazow.pdfIn PDF document text
    • http://files.cornerstoneuk.org/uploads/1/3/2/6/132681516/7382336.pdfIn PDF document text
    • http://files.innerlight-center.com/uploads/1/3/1/4/131407692/1bd3b8d2.pdfIn PDF document text
    • http://files.esquimalttaxi.com/uploads/1/3/1/3/131379860/7047954.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/1/0429/6101/0842/files/bebomonuwobaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2469/files/mabudibibis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6534/2117/files/comparative_short_and_long_adjectives_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/63_chevy_pick_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/development_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/30550617366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/41523035617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3706/5370/files/stony_brook_university_campus_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9639/files/7365026390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/tipapimipufudan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1805/1996/files/dark_souls_2_soul_spear.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 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_off00008aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA1 5780 bytes
SHA-256: 8b3586ce54853cd08bbbae9380bb49c987445afa8682439c993fba6d4da8818c
font_01_sfnt_off00009e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E2A 9792 bytes
SHA-256: 71f4503ed0e7657782420277a1aecf9ea043cf96697a248c2fdc6c0abeee16bd

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