Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3666ecd02737ff0…

MALICIOUS

PDF

84.8 KB Created: 2021-09-14 03:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: b534918fd1b260b4b05c13fa97354a21 SHA-1: 13b232d377678928861f385452203f710fe9033d SHA-256: a3666ecd02737ff0b5e18b5192d8a2bf73f3dd64aa6a8876feb2b098be625295
196 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic suggests the document instructs the user to copy and paste content into a command-line interface, a common technique to bypass initial execution restrictions and download further malicious content. The numerous embedded URLs, many pointing to compromised or disposable hosting, likely serve as download sources for secondary payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://kar360.com/resimler/files/70633102435.pdf In PDF document text
    • https://www.passion-rnd.com/upfile/files/2021/09/12/19773440083.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/27909192c2c31cd152a0495dbeb556d2/jumelibumadagafuvoviduniz.pdfIn PDF document text
    • http://hyunbulsa.org/~ewedd2/userfiles/file/jiwol.pdfIn PDF document text
    • http://greenflameenergy.com/userfiles/file/jajotofokiwatamavil.pdfIn PDF document text
    • https://mimpiindah88.com/contents/files/vedun.pdfIn PDF document text
    • https://gikguamerica.com/userfiles/file/61479322929.pdfIn PDF document text
    • http://e-junghan.com/userData/board/file/wepebeleturoxuzobuwitoxe.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/16136f2409df99---26114505883.pdfIn PDF document text
    • https://tbsva.org/Upload/files/20210904195214.pdfIn PDF document text
    • http://axiomestates.com/userfiles/file/84636937487.pdfIn PDF document text
    • http://clinical-pain.com/pds/userfiles/files/kunipinowimulusakap.pdfIn PDF document text
    • http://plise.org/userfiles/file/6382285829.pdfIn PDF document text
    • https://buddhaart.in/userfiles/file/xinifiberupodoruni.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd60fe58a6---pedowijesarigibowasudog.pdfIn PDF document text
    • http://kieryk.pl/img/userfiles/file/majupufebuwizisa.pdfIn PDF document text
    • http://smalternatywa.pl/media/upload/files/6e4a1fd25a58b798bab5eab85542bcdf.pdfIn PDF document text
    • http://dragonspond.com/uploads/files/98833584223.pdfIn PDF document text
    • https://atasuorganiktarim.com/upload/ckfinder/files/ladasamefovukibifo.pdfIn PDF document text
    • http://ulv-fogger.es/d/files/vubevujatokafoz.pdfIn PDF document text
    • http://residencecarlofelice.com/userfiles/files/99586345243.pdfIn PDF document text
    • http://www.tlo.ntou.edu.tw/ckfinder/userfiles/files/33679642605.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/dekuxolurekos.pdfIn PDF document text
    • http://ebbers-schilderwerken.nl/uploads/files/gitaj.pdfIn PDF document text
    • http://abwva.com/uploads/files/37663093023.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=eye+symbol+copy+and+pastePDF 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_off0000d88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD88B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f09d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09D 23692 bytes
SHA-256: 95d64b0232321603e0d464abccffa8c66d9312b567a12f38fbd7e2812b45df50
font_02_sfnt_off00012d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D05 10720 bytes
SHA-256: d3f613c564673d97f8632b35ea64a42d37e52dd930cb21d0cc031bcfd13d4ad1

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