Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b23f24b1d34af7…

MALICIOUS

PDF

43.6 KB Created: 2020-10-31 13:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8e61b9a118ea11ee7a8330e7c5067360 SHA-1: dd04a2b3ce3a2de90ff0a68cca2f245696b7b15c SHA-256: 60b23f24b1d34af7e02bf254e9647f0364f804200aa0f0b238db576e8be28281
192 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to disposable hosting and redirect to potentially malicious infrastructure, such as the URL `https://gettraff.ru/aws?keyword=free+showbox+apk+download`. The presence of a "download" button lure further suggests an attempt to trick the user into downloading unwanted or malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/aws?keyword=free+showbox+apk+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4422876/normal_5f98c14460769.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/1940959.pdfIn PDF document text
    • https://ledekatibawe.weebly.com/uploads/1/3/4/2/134265754/fubivu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_5f920d4d5f16a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416669/normal_5f959c37d40ef.pdfIn PDF document text
    • https://subonotewus.weebly.com/uploads/1/3/4/3/134347286/3137046.pdfIn PDF document text
    • https://vevinobe.weebly.com/uploads/1/3/4/4/134487659/4648044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f9d180e71a7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388165/normal_5f9a7e661e3c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375884/normal_5f8d24aa29a89.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/4f08e28b0c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/paropabaru/walej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89b029ed-78ea-456e-9635-d269210fa16e/fabaxuxesali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2837b19f-3a53-4f0e-b139-b41bad283160/81391822354.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/kizovifusumatiwowasi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B4 5364 bytes
SHA-256: 4b545a911be3c3b0361711305d0a4a3ab279f9831387e7954970cf96838d9a08
font_01_sfnt_off00007bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFD 11112 bytes
SHA-256: 7d273f79ffecf962580277178b2b55685c1142b4ec07db36bf24e7f4d55f272f

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