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)
MD5: 14b39a37e1e91dd851b7727b83150b00 SHA-1: c65ffbe410b33c14bf3cc4a6baa095292ce327cc SHA-256: c498920fc0ce536ade188fcd252112b82717b86324b576f1fa6f0bedf1f72a49
152 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 4

  • 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.
  • 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
    • http://laver.diamonddoula.com/uploads/1/3/1/3/131384429/a50ae29.pdf
    • http://files.infosphereab.com/uploads/1/3/0/7/130776152/4747287.pdf
    • https://cdn.shopify.com/s/files/1/0463/0960/5541/files/nevibavoxaza.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/zaduzogetejimodobolix.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/fimulatisexizogivuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/bunokegazowirifu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/tepusinusedowirulinuwojug.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/actions_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/ultimate_btools_mega.pdf
    • https://cdn.shopify.com/s/files/1/0449/5425/5515/files/enter_the_gungeon_cheat.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/xumudem.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/xotumisenawamamanedejigel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mobisibat.pdf
    • https://cdn.shopify.com/s/files/1/0430/5872/5015/files/35031328726.pdf
    • https://cdn.shopify.com/s/files/1/0437/4419/8805/files/wofivemevazo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

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

Open this report in the interactive analyzer, or submit your own file for analysis.