Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d9c582c6d845761…

MALICIOUS

PDF

69.3 KB Created: 2021-06-10 02:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a61b0a4408793600b5fa7db83438ac98 SHA-1: cf1c53cd2dab7fa0f46115e4edacccb0d2ec6e3f SHA-256: 0d9c582c6d84576105823afa973a469329d14354201e5116301e032709de41c4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ketchas.ru/pbw?utm_term=one+direction+four+deluxe+album PDF link annotation
    • https://dobidikomopal.weebly.com/uploads/1/3/5/3/135302797/gixojaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384821/normal_6009603d37919.pdfIn PDF document text
    • https://pepotojil.weebly.com/uploads/1/3/4/9/134900045/kobuguvativanemilal.pdfIn PDF document text
    • https://guliwomijura.weebly.com/uploads/1/3/4/8/134846957/4435914.pdfIn PDF document text
    • https://kikobuvikivevir.weebly.com/uploads/1/3/1/4/131437815/darabaxekujizuzili.pdfIn PDF document text
    • https://nabivedoki.weebly.com/uploads/1/3/1/4/131407492/mugowopapoxiwatexek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488842/normal_5ff75c6d40580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444638/normal_60171a65ea0e9.pdfIn PDF document text
    • https://fukuzemuk.weebly.com/uploads/1/3/5/3/135306557/1375744.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457330/normal_5ffa823c39e9c.pdfIn PDF document text
    • https://sezenoxesakibek.weebly.com/uploads/1/3/0/7/130740551/vulit.pdfIn PDF document text
    • https://mepefukuwipo.weebly.com/uploads/1/3/4/5/134523025/wasoros.pdfIn PDF document text
    • https://lupofavegevo.weebly.com/uploads/1/3/5/3/135335207/6681766.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f800bc5a-633b-4a81-b4dd-226c352cccc7/sadimamowavusudowejukeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d4ac174-9056-4b49-87f6-e8e19cf99ec6/how_to_mla_cite_the_declaration_of_independence.pdfIn PDF document text
    • http://moxulolo.pbworks.com/w/file/fetch/144670470/mafelanozapowinixatozo.pdfIn PDF document text
    • http://gamaxidad.pbworks.com/f/how_to_do_istikhara_quran.pdfIn PDF document text
    • http://mibegenav.pbworks.com/f/sifewunubif.pdfIn PDF document text
    • http://dowiginade.pbworks.com/w/file/fetch/144813270/how_to_print_multiple_slides_on_one_page.pdfIn PDF document text
    • http://depowota.pbworks.com/f/davitizegelebido.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d24d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD24D 5224 bytes
SHA-256: 6ef4a3f2af0ec450274c97e52c7b437eb0f471e62231f2dc7f54af9689037573
font_01_sfnt_off0000e3fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FD 11236 bytes
SHA-256: e5eb83bd6cfae18d5a3f4d3cce1ce708b4654dc4f5e15315c7fa5d45aa46e6f2

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