Malicious PDF — malware analysis report

Static analysis result for SHA-256 930cccba87edec77…

MALICIOUS

PDF

41.5 KB Created: 2020-11-07 08:12:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3abd907de48fa9c40dffff68971583a0 SHA-1: 2d4528053be684b8b596c7b793fb17315676b18d SHA-256: 930cccba87edec7720d772c93b74fcc1777216d11c0ad0a163b8ee60b0364a1f
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure, specifically the URL https://cctraff.ru/aws?keyword=solid+explorer+pro+unlocked+apk+download+free. This suggests the document is designed to trick users into clicking the link, which then likely leads to a malware download or phishing page. No scripts were extracted, but the presence of embedded URLs and the malicious redirector heuristic strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://cctraff.ru/aws?keyword=solid+explorer+pro+unlocked+apk+download+free
    • https://beperiguvo.weebly.com/uploads/1/3/4/3/134320750/vipapunuxogafagabel.pdf
    • https://sujegido.weebly.com/uploads/1/3/4/6/134695044/vasesosesax-sisotej.pdf
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/6258819.pdf
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/fizusirepo.pdf
    • https://gilolubirej.weebly.com/uploads/1/3/4/3/134309297/820f725e14f0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tadovu/givogukevupatunozek.pdf
    • https://vixipaso.files.wordpress.com/2020/11/libejemoxunizevas.pdf
    • https://salexovig.files.wordpress.com/2020/11/65833217306.pdf
    • https://s3.amazonaws.com/bidivo/raspberry_pi_gps_clock.pdf
    • https://s3.amazonaws.com/gumagabu/compile_and_run_c_program_linux.pdf
    • https://uploads.strikinglycdn.com/files/dffd6933-4c67-4961-a73a-edd8f5b2a48d/delonghi_ceramic_heater_reviews.pdf
    • https://s3.amazonaws.com/gofilafixu/digital_minimalism_drive.pdf
    • https://s3.amazonaws.com/gofiguj/76074415351.pdf
    • https://uploads.strikinglycdn.com/files/6978d7a8-4019-4a5e-baa4-18e45dcd93ce/fupelifuxajavatito.pdf
    • https://uploads.strikinglycdn.com/files/87ffefc3-9104-413d-8481-c3c37a557c59/vokeloxowemomigisaba.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006315.bin
7b5efd15a4719a2b4422185e811596314f05f2bd9e8e4c2c824218fa99543b5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6315 5300 bytes
font_01_sfnt_off00007548.bin
4d12de3513f12dc93562beb0eae2b47e0b703cc1af1d9a7d76754ec66800a105
pdf-font-stream PDF embedded font (sfnt) at offset 0x7548 10372 bytes