Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b3e845d9514421…

MALICIOUS

PDF

41.9 KB Created: 2020-08-04 19:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ec59779af78e5bfe614f16d3c355cbf SHA-1: 3cbd79ed018c8f4bf43e4c66af938fb521390e20 SHA-256: 10b3e845d951442123e2a14de87cab826ea1894f7a557f1388f237b2c634949d
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic firings indicate the PDF is designed to link to external content, and the presence of a "download" button lure suggests a phishing or redirection attempt. The primary malicious URL identified is ttraff.ru, which likely serves as a gateway to further malicious activity.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=base64+image+to+pdf+php
    • http://files.naturaltouchhealing.com/uploads/1/3/1/1/131164202/tuvotekejij-tewirage-lifafavi.pdf
    • http://files.completewellnesstherapies.com/uploads/1/3/1/3/131378868/fupitabogoxupu.pdf
    • http://files.limassolsportsmassage.com/uploads/1/3/0/8/130874129/laxuvovobopekidom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/towarifofaxizufapebatil.pdf
    • https://cdn.shopify.com/s/files/1/0437/2735/6056/files/tuwapepotolo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/45325155838.pdf
    • https://cdn.shopify.com/s/files/1/0437/2840/4632/files/josibisunekalufimiluzod.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/wirogalexolutemifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/79917621314.pdf
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/68725166861.pdf
    • https://cdn.shopify.com/s/files/1/0429/7572/3673/files/unity_wave_shader.pdf
    • https://cdn.shopify.com/s/files/1/0432/6146/0644/files/samsung_universal_print_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0432/0962/1664/files/power_factor_improvement_using_capacitor_bank.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/70919282001.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/aptitude_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/19831454415.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_off000062eb.bin
665e89fe2f2000fb2e9d3e081d5af0b4329fad759d931188f4749ce4d6bc25f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 5620 bytes
font_01_sfnt_off000075fc.bin
b9f4c04f65729205ac36a46f307b489e9e1cd178932d345008b3e22bd2f2e5b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75FC 10732 bytes

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