Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f6926fca5c6534…

MALICIOUS

PDF

70.6 KB Created: 2021-02-27 12:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9689193d29ec6fef9638d89db87f5d7e SHA-1: 3752e3789f0532ab33b02761468f6c89d5cde058 SHA-256: e4f6926fca5c65349da1d9fcb7f84e8b8c5b52b18654396d8dfe4327534d1c2b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/wix?keyword=a+mi+me+gustan+como+tu PDF link annotation
    • https://wapilumavazari.weebly.com/uploads/1/3/4/4/134446451/jiseketalukuji-narirujakosiw.pdfIn PDF document text
    • https://kubazabuz.weebly.com/uploads/1/3/4/8/134885093/417087.pdfIn PDF document text
    • https://fimiximokizo.weebly.com/uploads/1/3/1/3/131384127/feratamo_soxizolipu_xeneg.pdfIn PDF document text
    • https://bujozimadepaxed.weebly.com/uploads/1/3/4/6/134615651/xomix.pdfIn PDF document text
    • http://rejasikega.scienceontheweb.net/medumidon.pdfIn PDF document text
    • https://wapaberupuz.weebly.com/uploads/1/3/5/3/135397773/3134029.pdfIn PDF document text
    • https://zajewovebuvi.weebly.com/uploads/1/3/0/7/130739158/zamije-bemadokixoxir-giginizetebe.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/29387733365.pdfIn PDF document text
    • https://dupemokuko.weebly.com/uploads/1/3/4/7/134759865/jowusisufatimuvakib.pdfIn PDF document text
    • http://wimuzawoxi.getenjoyment.net/what_does_it_mean_when_the_dryer_says_sensing.pdfIn PDF document text
    • https://kaseloguxov.weebly.com/uploads/1/3/1/4/131406527/guporelobobutuwi.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/gowupuzokowuxes/dark_brown_and_tan_dachshund.pdfIn PDF document text
    • http://kuwubuvorij.rf.gd/esgo_guidelines_endometrial_cancer.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/91527976215.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/8524848470.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_off0000d691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD691 4980 bytes
SHA-256: 4e3eea0239c1b2ae840baf84e927a284610e708ce3a16371339b9aeae58799c6
font_01_sfnt_off0000e773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE773 11392 bytes
SHA-256: 37e65392b61457db2726d6bd5e55c3a71a49922bc0ce53e2f138d083e13160ee