Malicious PDF — malware analysis report

Static analysis result for SHA-256 43e68ae7038d32ac…

MALICIOUS

PDF

67.6 KB Created: 2021-02-27 22:53:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 463adf154de41c5291846bae27699eab SHA-1: af0580c45788b9d10be20bda3008874415db7078 SHA-256: 43e68ae7038d32acbfea5d367bfb68ac4e1acb5a144f2da5564fff7b409bcd3b
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://zajinet.ru/award?keyword=jotul+f+602+specs PDF link annotation
    • https://jamofavoxaf.weebly.com/uploads/1/3/4/6/134698870/kikiwa.pdfIn PDF document text
    • http://xutuvulamarav.iblogger.org/xanezimobum.pdfIn PDF document text
    • https://zimazegikej.weebly.com/uploads/1/3/4/7/134732290/8480762.pdfIn PDF document text
    • http://vufajed.getenjoyment.net/how_much_do_esl_online_teachers_make.pdfIn PDF document text
    • https://lajutiruwogow.weebly.com/uploads/1/3/4/5/134585316/507967.pdfIn PDF document text
    • http://sugameloxufe.mywebcommunity.org/64374446802.pdfIn PDF document text
    • https://netokuwusava.weebly.com/uploads/1/3/4/3/134384506/76da589c21.pdfIn PDF document text
    • https://xasopivuzag.weebly.com/uploads/1/3/5/3/135333163/7f5b809eed.pdfIn PDF document text
    • http://desokore.medianewsonline.com/falanijiwunejotezo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gewofudi.rf.gd/admission_guide_book_2019_20.pdfIn PDF document text
    • http://bosulug.epizy.com/advanced_typescript_by_example_react_form_carousel.pdfIn PDF document text
    • http://salilizuvozel.rf.gd/nekesubewesawavul.pdfIn PDF document text
    • http://jimibidubarabus.epizy.com/nugajekufoduva.pdfIn PDF document text
    • http://zazupixuwup.rf.gd/kijoriwiwizimafafe.pdfIn PDF document text
    • http://notavopanugatog.epizy.com/guzafoxurezi.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_off0000cbd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD2 5120 bytes
SHA-256: ea0cbe138c7d1011204e44322e988df39bc238c05c3965f4c5cdc8b8aa0b51e6
font_01_sfnt_off0000dd66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD66 10588 bytes
SHA-256: 114cd26db54c59cd65a6de423d878e9322e0ca9d987e0703d9c1053551b9e7bf