Malicious PDF — malware analysis report

Static analysis result for SHA-256 871c09bedc7c5e9e…

MALICIOUS

PDF

49.0 KB Created: 2020-07-29 19:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 877a214887b27efdea4a6cd2ef09d0d2 SHA-1: 52771d96070ac5352d1d9ca1757b2c01ad65b47e SHA-256: 871c09bedc7c5e9ec8a031c8320f9e748d1a9710d8968de754758ae253564279
194 Risk Score

Malware Insights

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

This PDF file contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The primary malicious URL, https://ttraff.ru/pify?keyword=chilling+adventures+of+sabrina+comic+book+pdf, is identified as a redirector. The document body, though heavily obfuscated, appears to be a lure related to 'chilling adventures of sabrina comic book pdf', suggesting a phishing or scam attempt.

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=chilling+adventures+of+sabrina+comic+book+pdf In PDF document text
    • http://files.beam-ugentvub.com/uploads/1/3/1/6/131636651/24a6baaaffce40.pdfIn PDF document text
    • http://files.flytotheskyteam.com/uploads/1/3/1/4/131453253/4730622.pdfIn PDF document text
    • http://files.golffordreams.com/uploads/1/3/1/4/131452817/6936473.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/1/0437/8581/4177/files/rowedebajisinowesewogebaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54183348773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3275/6902/files/77809790425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0323/1903/files/vopafeteligu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/fugudapekiwifefage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/26077310971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5072/1699/files/pogovuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/91345888810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7078/3645/files/sesofomowupiboxiteme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/satatetuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4756/8039/files/94459985840.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_off00008101.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8101 5736 bytes
SHA-256: 87b88cd74fc17df1b212d7e644c83fbdd0acc72fe0a2f03a1ba32b3e82895e4f
font_01_sfnt_off0000945c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x945C 10064 bytes
SHA-256: d044b95258abc2c8356cc948266aa9524aa8723d83d896fae4d4bbacbe24bcc0

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