Malicious PDF — malware analysis report

Static analysis result for SHA-256 23c5f69af457ffc6…

MALICIOUS

PDF

39.4 KB Created: 2020-10-03 07:09:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f570d5de087b2fd15e07c37edeb274d5 SHA-1: 6a4be029e43a32b3166e17f7d376c71345689199 SHA-256: 23c5f69af457ffc632db3bca646a6028c860c48c3ef716cc1fcc04ce58933d74
124 Risk Score

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 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.
  • 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/strik?keyword=realtek+high+definition+audio In PDF document text
    • http://files.birthservicesbykristin.com/uploads/1/3/1/6/131637814/4416317f62bc.pdfIn PDF document text
    • http://files.smgengr.com/uploads/1/3/2/6/132695730/vikamu_gevipetewamutol.pdfIn PDF document text
    • http://files.castleislandcamps.com/uploads/1/3/0/8/130814784/230282.pdfIn PDF document text
    • https://site-1038943.mozfiles.com/files/1038943/62265172127.pdfIn PDF document text
    • https://site-1039661.mozfiles.com/files/1039661/zikasakatimijisag.pdfIn PDF document text
    • https://site-1040322.mozfiles.com/files/1040322/4790889225.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/selaveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1319/0044/files/93139308637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0670/4290/files/28291080717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15caaa95-3c78-406d-a9c1-9be8e4648cac/32527047790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a26df9e-3512-425b-ac71-6be551734e2d/37463586242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5db35e7c-c136-40c2-8092-d1f04fac60ec/bidobagasezifikobise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70858889-64c4-4a62-bc9b-409a85e4d2e8/14057632198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/156a7d0e-904f-458d-91ee-5807e6be620a/fuwibugonifigegidufatabu.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_off00005426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5426 4964 bytes
SHA-256: 109c28d4c072ff251179084e90f27ae982efec7e9a6faf6d5e6664cc80ec2fa0
font_01_sfnt_off00006510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6510 14136 bytes
SHA-256: eebc98c8d669830b36e14c966e8914e54156bd377d469876997461553f986780

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