Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b3c1c4027bbd94e…

MALICIOUS

PDF

74.0 KB Created: 2021-09-04 05:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e4af9e6e996059c4cb7b0ffbc2d58ffb SHA-1: 6b746b3cd484c846cdcb3d50ed2720e94081d498 SHA-256: 1b3c1c4027bbd94e476b4e5857f871293950dce846f4b4285505da6105da038c
156 Risk Score

Malware Insights

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

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous external links, many hosted on compromised websites or disposable domains, designed to redirect users to potentially harmful content. The presence of a link farm and the specific URL suggesting a 'cisco ccna pdf ebook' indicates a social engineering attempt to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/uplcv?utm_term=cisco+ccna+pdf+ebook PDF link annotation
    • http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/422143829.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-3/20210503072508503631.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/05dd45afc6818e8ec298010d6514f5d5/juzewudes.pdfIn PDF document text
    • http://skidubravy.sk/spravca/ckfinder/userfiles/files/74341636483.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/v7fugtj9ahdgrfi7ebbkbo1of8/70772579476.pdfIn PDF document text
    • http://vagtteam.dk/userfiles/Files/kudijobi.pdfIn PDF document text
    • https://triosms.com/userfiles/file/78866371699.pdfIn PDF document text
    • https://zold-kommando.hu/files/sumap.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b59f8a08655---37363289420.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/35558346049.pdfIn PDF document text
    • http://cintabogor.com/Uploads/userfiles/files/josanox.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/8fb0f43ce721b757691ea69f0317dd17/fibosakuxabitobogizo.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b761028f9d61e36cc4b987d8b3958d17/rivulemetaxibomaze.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/27714000347.pdfIn PDF document text
    • http://sisparts.pl/zdjecia/fck/file/rewiwalotirik.pdfIn PDF document text
    • http://budoprojekt.eu/obrazy/file/murebibugojuxe.pdfIn PDF document text
    • http://lhsclassof68.com/clients/73441/File/57677166966.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160973274d31bc---mazogum.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e069348c6f64a1d6a0c6aae750269630/vidasurokuvulozedipajaxa.pdfIn PDF document text
    • http://www.firstpages.eu/app/webroot/files/userfiles/files/barajamoduluxopafe.pdfIn PDF document text
    • http://www.farmaciapenil.es/userfiles/files/dolitavojijiv.pdfIn PDF document text
    • http://hatowo.com/app/webroot/uploads/files/90113287893.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/falajusojenifotuwijiwufog.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca5dbb48d9---junasojexisofipivevi.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/c642b39c813335e5ab82392c8f9f6c4a/junebezanotex.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000beb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEB6 10632 bytes
SHA-256: f98ad26cea8ec45e3835bb6775c376f4ddf27c71e0cd14000ab51d6e110b8faf
font_01_sfnt_off0000d6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F0 16896 bytes
SHA-256: ce920f2d1389d3742bb723d1e070af9f6c172429469f2d3f34de180f245627c2
font_02_sfnt_off000102ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102AE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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