Malicious PDF — malware analysis report

Static analysis result for SHA-256 15b9bbf6ad01524d…

MALICIOUS

PDF

54.7 KB Created: 2020-11-07 00:06:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0504a7076b3a683b971632f4db5127e SHA-1: 1f02df7cb5b8bce92878b49294bb1fe83aa68730 SHA-256: 15b9bbf6ad01524d2cb04dff5b7db4b7d954cd46498337ee12f70535bd423eab
96 Risk Score

Malware Insights

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

This PDF file contains numerous external links, a common tactic for SEO manipulation or to redirect users to malicious sites. The primary URL, 'https://traffset.ru/123?keyword=newstudyhall+google+sites', suggests a phishing or SEO spamming attempt. While no scripts were explicitly extracted, the PDF structure and the high ML classifier score indicate malicious intent, likely related to driving traffic or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=newstudyhall+google+sites
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://legowuvirifa.files.wordpress.com/2020/11/active_and_passive_voice_exercises_worksheets.pdf
    • https://s3.amazonaws.com/subud/56894979566.pdf
    • https://gaduroso.files.wordpress.com/2020/11/75780125128.pdf
    • https://uploads.strikinglycdn.com/files/77f13e32-ad88-484e-8179-b174fa181c52/arb_elements_fridge_user_manual.pdf
    • https://uploads.strikinglycdn.com/files/bb84c404-df3b-492e-8da4-6d9618d51d48/50103433079.pdf
    • https://s3.amazonaws.com/vuzufexarevima/english_speaking_course_in_marathi.pdf
    • https://ferinojonaza.files.wordpress.com/2020/11/70601037384.pdf
    • https://buleposi.files.wordpress.com/2020/11/65002201674.pdf
    • https://uploads.strikinglycdn.com/files/de635972-4534-4a4a-8be8-49602e5f27c7/gupabovukubuwe.pdf
    • https://watupep.files.wordpress.com/2020/11/familiengeschichte_name_suche.pdf
    • https://mutabivini.files.wordpress.com/2020/11/dungeons_and_dragons_3.5_monster_manual.pdf
    • https://uploads.strikinglycdn.com/files/efc852bf-8413-402d-acc1-051b32926762/lofosepufalowo.pdf
    • https://uploads.strikinglycdn.com/files/6115e4d2-1c46-448a-bea5-db67186ccec6/zomozokudevibud.pdf
    • https://uploads.strikinglycdn.com/files/8e038d8a-8a88-4964-8f2a-3f98b76a7533/wafutolukiwumuligomifuk.pdf
    • https://goresab.files.wordpress.com/2020/11/54381570989.pdf
    • https://mutozofe.files.wordpress.com/2020/11/67728004733.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ff4.bin
3bc8301340a580d99fabd9dd38e755471f91b5be1df606a0df3957665026837c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF4 7536 bytes
font_01_sfnt_off00009915.bin
f561605bae3b57e25e9208f9a5c2c58ea8bc6147956fa8bb6683b78e98b20d05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9915 5156 bytes
font_02_sfnt_off0000aab9.bin
0b63d0946fdb9818621491a9e9b475cee5b4374afd7c40d21e2af854494dba33		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB9 10120 bytes

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