Malicious PDF — malware analysis report

Static analysis result for SHA-256 8be17deb0356e876…

MALICIOUS

PDF

76.5 KB Created: 2021-02-15 19:38:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 44385fdd358b5a0e36893e2e35f91c76 SHA-1: 4a6d25a3c0ba9dd7e0300230750b95ba2d5a94a6 SHA-256: 8be17deb0356e876ffc212d05906b3c22628049529f36b09f325f1dc239c46f2
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 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.
  • 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://yafferge.ru/wix?keyword=yale+intouch+manual In PDF document text
    • https://cdn.sqhk.co/bugininaxi/1uVqWv2/spelling_and_grammar_check_not_working_word_2016.pdfIn PDF document text
    • https://cdn.sqhk.co/mivufarowiwi/kjjPibG/disorderlies_the_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/hfhfqG7/megamind_fish_voice.pdfIn PDF document text
    • https://wapojopaboxijok.weebly.com/uploads/1/3/4/7/134747084/xosixolanegotep_jodasu_denawudo.pdfIn PDF document text
    • https://zufavaxevonek.weebly.com/uploads/1/3/0/9/130969036/rojusobutewo_wowawebemu_taroxozinava.pdfIn PDF document text
    • https://bowonalixatan.weebly.com/uploads/1/3/5/3/135347428/9d675b.pdfIn PDF document text
    • https://cdn.sqhk.co/xomifinetepi/gciiier/baixar_jogo_real_moto_brasileira.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/bNij9eQ/zulapof.pdfIn PDF document text
    • https://pufabakorulur.weebly.com/uploads/1/3/4/3/134320636/zuboxexetosepoxono.pdfIn PDF document text
    • https://cdn.sqhk.co/padasagam/Fymiihe/xtreme_soaring_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/1ghihem/movistar_play_argentina_canales.pdfIn PDF document text
    • https://vixixufabajuwe.weebly.com/uploads/1/3/1/1/131163632/xezuga-ravile-rojadafemowa.pdfIn PDF document text
    • https://cdn.sqhk.co/gozigawefo/bgfPgiK/96317445197.pdfIn PDF document text
    • https://mogopefisumiba.weebly.com/uploads/1/3/5/2/135295831/7142344.pdfIn PDF document text
    • https://tololomajaju.weebly.com/uploads/1/3/4/4/134472688/kikekip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zisibife.epizy.com/angular_6_reactive_form_validation_on_blur.pdfIn PDF document text
    • http://fufolisokoja.rf.gd/41987453880.pdfIn PDF document text
    • http://wobemiko.epizy.com/tipaluvojodutadozobixenam.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_off0000f212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF212 4724 bytes
SHA-256: 2c54612791a51a4ea70d953e752575d1d1b28462b46192635aee480af288b4ea
font_01_sfnt_off000101fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101FD 10440 bytes
SHA-256: 9ee97cf3c4c015fdb1efbfd8bc8d9ac12e5e24a9345f96015747e7b6217d7f42