Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b2b46062aa8def…

MALICIOUS

PDF

86.4 KB Created: 2021-07-17 14:55:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: ff688c5ca217558d8ed7c1e7368ccf7c SHA-1: 457d15cda767c7a88382098586d56b0306772044 SHA-256: 00b2b46062aa8def3a7bb25c83d07dc2957311cadbe4cba5c13fa6d4f9c88560
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised websites, likely to facilitate phishing attacks or malware distribution. The presence of multiple links on disposable hosting and compromised CMS uploads suggests a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/c564ce6cc859311b6ccf54e9d5075b74/lijeki.pdf In PDF document text
    • https://malabarmail.com/ckfinder/userfiles/files/20891255957.pdfIn PDF document text
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/94648744431.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/54109743797.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/r80mjr4a2s5s9js05cs2kdnpj2/97506555673.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a442b47e0e2---wemikuridenodumobig.pdfIn PDF document text
    • http://jncs.kr/page_data/file/20210713054250.pdfIn PDF document text
    • http://ontsgoi.shop/uploads/files/sewamax.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/6699e6394cad906c9a54537284590308/71177542246.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/24808399984.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/2up18o6fr6thi1b6m19h4hl81a/96005431499.pdfIn PDF document text
    • https://drlanda.hu/user/file/95850513356.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/iisgo900vageqmmrse17nnqmp2/19119435269.pdfIn PDF document text
    • http://airconbank.com/upload/fckeditor/file/bumunexepafolunipedoju.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/27820440230.pdfIn PDF document text
    • http://gmkms.net/upfile_editor/2021/files/565316741.pdfIn PDF document text
    • https://101doctor.com/uploads/ckfiles/files/60ccac3d7efd4.pdfIn PDF document text
    • https://zabulgaria.org/userfiles/file/94097026493.pdfIn PDF document text
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/3ufpg4p0bsnhr5397ucp5j3gro/furukuzaxokemaforija.pdfIn PDF document text
    • http://pensionpoint.cz/userfiles/files/63981430294.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c4eb4d88b94---84255499322.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca6660465e---34377731095.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b863475204e---ralula.pdfIn PDF document text
    • https://ekransamara.ru/files/pezinozilemokurepanis.pdfIn PDF document text
    • http://muzycznescyzoryki.pl/userfiles/file/sosinoxaxasukumog.pdfIn PDF document text
    • http://poorclarescork.ie/images/10381520060.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=circulatory+ailments+meaningPDF link annotation
    • 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_off0000ef44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF44 10816 bytes
SHA-256: ff0c58096804a34eab5da05878ee1f47c404f8053ffdc725c66471335cd1db85
font_01_sfnt_off00010845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10845 16812 bytes
SHA-256: 4043a7c8f112835d38345da543681771eb031a0b3c8afe1f1703167ed755d1ea
font_02_sfnt_off00013430.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13430 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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