Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed7ed7e56c9be76c…

MALICIOUS

PDF

90.6 KB Created: 2021-07-31 01:43:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a906dfb68904305d255c20c35e08b334 SHA-1: 89433e8419d8837c57738e6edb4cb2965701d024 SHA-256: ed7ed7e56c9be76c643555e3f65951cf73d305120ba1afe77e0cbb8383cad87d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to compromised websites and disposable hosting, suggesting a link farm designed to redirect users. The PDF structure and embedded URLs point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://catamma.ru/uplcv?utm_term=3d+motorcycle+design+software+for+android PDF link annotation
    • https://pergamine.com/ckfinder/userfiles/files/xojifoxiki.pdfIn PDF document text
    • http://gps-tw.com/CKEdit/upload/files/99422010574.pdfIn PDF document text
    • http://ltmetal.com/userfiles/files/9064783018.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160727bea9fea1---63229566237.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b1ceeab36f2---fapababomux.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8722e4f253---widawema.pdfIn PDF document text
    • http://jcon-aps.dk/userfiles/file/55862925964.pdfIn PDF document text
    • http://chalappuram.com/userfiles/file/288600338.pdfIn PDF document text
    • http://staresecurity.com/userfiles/file/47623599084.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607b067225db3---72268422726.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/5941b67ebd2903bb5770bd1906577e20/16097366874.pdfIn PDF document text
    • http://spoilersmensgolfclub.com/clients/865201/File/31313022910.pdfIn PDF document text
    • http://krakow4you.pl/krakow/files/malunotofajivubajatafipit.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a634461bead---xixukugisuxuvusumibis.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/952eb7590821a5bf901bcdad5c274663/62694522685.pdfIn PDF document text
    • https://catequesisnavarra.org/guiarte_userfiles/files/87821028294.pdfIn PDF document text
    • https://activepymes.com/pub/file/xaxowaxatazajokamuba.pdfIn PDF document text
    • http://dekogard.net/deko/veri/_files/supivivotaten.pdfIn PDF document text
    • http://diclenakliyat.com/userfiles/file/48494837562.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/d740bb620e19b2012b385d84d068cf63/xojovagedopuzenebuzemis.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1607193bc1b80b---35237858500.pdfIn PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/dcbb2fed3704ed5b0851f8bc79981a95/98947946592.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_off000100be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BE 16500 bytes
SHA-256: cff712b93221527e9012a6540e0526a93b680b0ebfddc502c55d656966ea6813
font_01_sfnt_off00012b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B46 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001435d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1435D 11092 bytes
SHA-256: f3ea29427d799c7dbb043947960bab3ddb46dbc68d9ec61124637486ba74da10

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