Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02dc343267b4a2c…

MALICIOUS

PDF

62.5 KB Created: 2021-02-10 21:58:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c2d3ecc0c2f537d02fa09a11097b73ff SHA-1: 177d88ecf7ee82d0d184bbf260ba85ea267b8581 SHA-256: d02dc343267b4a2c24e821f6c6f792b93f3821595e206cfd068de31eb8a44f8d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://maypoin.ru/123?utm_term=math+magician+division PDF link annotation
    • https://kigadipokifexi.weebly.com/uploads/1/3/0/8/130813079/435048.pdfIn PDF document text
    • https://bivufinemena.weebly.com/uploads/1/3/1/3/131380184/775fc49eebc2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389582/normal_6009d49f61257.pdfIn PDF document text
    • https://fabebebu.weebly.com/uploads/1/3/2/7/132740756/zefotipivuxit-febafu-lusek-pazegogesuforu.pdfIn PDF document text
    • http://jakartapro.xyz/jovukolekidowo7fcn.pdfIn PDF document text
    • https://fezulenigi.weebly.com/uploads/1/3/4/4/134485980/valuled.pdfIn PDF document text
    • https://paboripiniw.weebly.com/uploads/1/3/0/7/130739049/c8218cc6e4e.pdfIn PDF document text
    • http://podarokinsta.online/newilijegorisnols.pdfIn PDF document text
    • https://nupinegudoxaxu.weebly.com/uploads/1/3/5/3/135350485/57441c301f5535.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/4hggjcj/98728227117.pdfIn PDF document text
    • http://idealicait.site/bacteriophage_life_cyclek4fqa.pdfIn PDF document text
    • https://tipowunukal.weebly.com/uploads/1/3/4/3/134355136/2428158.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/rozebofukixus/android_room_typeconverter_kotlin.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/e_newsletter_template_html.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/26794180375.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_off0000b8b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8B7 5292 bytes
SHA-256: 56f90ae93ffc5eeb9e14332bddd89f3cb348a56265385ec1ef3ffcca54c5f2a2
font_01_sfnt_off0000caa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA8 10192 bytes
SHA-256: 6dde1d44ea74c13be14bdbcfd27a9d6dba30b916fd202e6159a875b65f489634