Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccf636780e6fe74…

MALICIOUS

PDF

117.6 KB Created: 2020-08-31 04:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aeccede67482cdbb8edc89cbaeb613b3 SHA-1: 5e113a7aef0740495ed3d4887bda3fcb0e8dc737 SHA-256: 6ccf636780e6fe748454483561342a5bafe07f733aad4cc26f157604c380b728
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to a malicious URL. The document body, though heavily obfuscated, contains the target URL. The primary malicious IOC is the redirector URL, which is used to funnel victims to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/wix?keyword=el+planeta+delos+simios+confrontaci%2525C3%2525B3n+online In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/deep_ecology_and_ecofeminism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0964/files/schlumberger_petrel_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8687/9647/files/62020052463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0139/6638/files/coins_and_prices_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6738/3712/files/trustworthiness_qualitative_research.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9ff9b8_79fd9c7831bb46daaf91488ebb599ee5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9002/5379/files/8211715101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8465/1423/files/virginia_state_inspection_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4038/1855/files/15367745273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3139/5493/files/81530800817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7407/6315/files/bufinugoritevetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/4741/3910/files/chaconne_bach_busoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2694/5947/files/dnd_attack_roll.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000160ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160EA 3016 bytes
SHA-256: 6b1886100909a5777bb30fc7b7be00bba8ed48ad5f5b392b7a0cb4783a0739ac
font_01_sfnt_off00016ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BA4 5184 bytes
SHA-256: 0c687a978b2edc5792803f706909841e5c0e3b1c996ba726818bab3a1097aa5a
font_02_sfnt_off00017ce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17CE2 11724 bytes
SHA-256: 9365c594c6ddfcc0f1442f56752412dfe72cbe1d7e25d1c42d7fd183589c4ffc
font_03_sfnt_off0001a311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A311 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
font_04_sfnt_off0001b7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B7D9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2