Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69881c58b96a540…

MALICIOUS

PDF

42.8 KB Created: 2020-08-11 23:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9190fe7c2428d475561e82de0ad6c1d6 SHA-1: aaa1417b846283940070adfad9dd8cf021278d96 SHA-256: b69881c58b96a5401fb3ab23c81051e4adc0242b1f4c4cb51423b4819d19a337
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded external links, with a critical heuristic firing indicating a PDF link farm. One of the primary links points to a known malicious redirector. The document body, though heavily obfuscated, also contains the same malicious URL, suggesting an attempt to lure users to malicious content or manipulate search engine rankings.

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=add+blank+page+to+pdf+itextsharp In PDF document text
    • http://files.superiormachineandfab.com/uploads/1/3/2/8/132815154/5810631.pdfIn PDF document text
    • http://files.rogersranch.org/uploads/1/3/1/0/131069950/11800f362c191dc.pdfIn PDF document text
    • http://vafoz.1songproductions.org/uploads/1/3/1/6/131607163/weridamo-xenobavulu-pubat-gozegogo.pdfIn PDF document text
    • http://files.feedmeupdelivery.com/uploads/1/3/1/4/131453354/7459404.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/1/0429/7441/2949/files/ritirumafun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/29628402643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/boardman_22_function_bike_computer_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0544/3233/files/namibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/exercices_corrigs_barycentre_seconde.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/masewusomarewisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/puritan_bennett_840_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/86368761182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/turusolape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/surah_al_kahf_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/los_emisarios_alvaro_mutis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38608120386.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_off00006142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6142 5564 bytes
SHA-256: fe3860398ecf6e8a57372f28529c7397dbeab7d33a304f1ec02f14c7aba04a81
font_01_sfnt_off00007430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7430 13236 bytes
SHA-256: d51a05f8cd3153ae13440ad0cf5c47274a0e096b3edb9d3d192dc153def010e4

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