Malicious PDF — malware analysis report

Static analysis result for SHA-256 610351264097c5e7…

MALICIOUS

PDF

80.3 KB Created: 2021-09-15 14:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a9cd9a47d37fa93caff139a24a273b79 SHA-1: 049ed19836d87956aeef6b515a97c9d8651adb01 SHA-256: 610351264097c5e7e35f593973ac7ccf29cfee2628565f04573f1dbf8de09bbe
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains a link farm and redirects to external URLs, a common tactic for phishing or malware distribution. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests the document's purpose is to trick users into believing there's a change in payment instructions, a classic business email compromise technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://pixomot.ru/uplcv?utm_term=pubg+india+apk+download PDF link annotation
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/b48a7843514859c7080fe0a994acb6a3/47795748962.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136c432c6354---2331952973.pdfIn PDF document text
    • https://wangwangcamp.com/uploads/files/202109110658114950.pdfIn PDF document text
    • https://pakianco.ir/data/image/uploads/news/files/59685846180.pdfIn PDF document text
    • http://stellarp.com/userfiles/files/85175859034.pdfIn PDF document text
    • http://rotarytattoomachine.co/project-new/christianbook/upload_images/file/28723550172.pdfIn PDF document text
    • https://www.newhorizonscrisiscenter.org/ckfinder/userfiles/files/tofitup.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/megeposibokik.pdfIn PDF document text
    • http://deccanquest.com/konadnew/userfiles/file/nodosozelegutani.pdfIn PDF document text
    • http://xuanfe.com/uploads/FCKeditor/file/77212468823.pdfIn PDF document text
    • http://oldadmin.k12cart.com/media/files/91480540100.pdfIn PDF document text
    • http://machin.kr/userData/board/file/16274562974.pdfIn PDF document text
    • http://4chan.ro/UserFiles/file/85455615406.pdfIn PDF document text
    • https://best-of-geldanlagen.de/userfiles/file/savaxezevaverisajapaja.pdfIn PDF document text
    • http://atel-j.nl/uploads/files/42316984523.pdfIn PDF document text
    • http://old.arcnet.org.tw/ckfinder/userfiles/files/48216390719.pdfIn PDF document text
    • https://shreegroupco.com/userfiles/file/zezujetexegano.pdfIn PDF document text
    • http://blossomtour.net/FileData/ckfinder/files/20210902_A5ADFEE8279CDED9.pdfIn PDF document text
    • https://anandamsanyal.com/userfiles/file/nuxanozajuturewupe.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/ziborew.pdfIn PDF document text
    • http://k-sta.kr/FileData/ckfinder/files/20210903_3A558ECC28F58DFC.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/gabk76mp3p2s1j99hn1hku8600/mujetetejamegake.pdfIn PDF document text
    • https://picinterior.com/ckfinder/userfiles/files/61563786138.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_off0000d562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD562 10488 bytes
SHA-256: 4a6e84dac8b554cbd76782455feca693366f3794a694ff2ea1b7bb2696c905a5
font_01_sfnt_off0000ecd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD7 18192 bytes
SHA-256: 5e3edfd94949f1c2374ef197edcabb3b9005fc6964779905557899b2155b7f10
font_02_sfnt_off00011bf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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