Malicious PDF — malware analysis report

Static analysis result for SHA-256 c498920fc0ce536a…

MALICIOUS

PDF

53.1 KB Created: 2020-08-20 22:08:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14b39a37e1e91dd851b7727b83150b00 SHA-1: c65ffbe410b33c14bf3cc4a6baa095292ce327cc SHA-256: c498920fc0ce536ade188fcd252112b82717b86324b576f1fa6f0bedf1f72a49
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, a technique often used to create link farms for SEO manipulation or to hide malicious destinations. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=garmin+maps+europe'. The presence of numerous external PDF links, many hosted on Shopify, suggests an attempt to distribute content through seemingly legitimate platforms while obscuring the true nature of the links. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the direct user-facing content.

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=garmin+maps+europe In PDF document text
    • http://laver.diamonddoula.com/uploads/1/3/1/3/131384429/a50ae29.pdfIn PDF document text
    • http://files.infosphereab.com/uploads/1/3/0/7/130776152/4747287.pdfIn 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/1/0463/0960/5541/files/nevibavoxaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/zaduzogetejimodobolix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/fimulatisexizogivuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/bunokegazowirifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/tepusinusedowirulinuwojug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/actions_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/ultimate_btools_mega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5425/5515/files/enter_the_gungeon_cheat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/xumudem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/xotumisenawamamanedejigel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mobisibat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5872/5015/files/35031328726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4419/8805/files/wofivemevazo.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EF 4764 bytes
SHA-256: 5ca439b3f1a3bc57fd94650b8ba0556152a8b7e49b1170fc2815d36bdb69e1aa
font_01_sfnt_off000095f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F9 10364 bytes
SHA-256: 0d46de2e8f7d0abf7d17a7f1c354002cee855b039f09bb634aec79ebc371f373
font_02_sfnt_off0000b983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB983 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71