Malicious PDF — malware analysis report

Static analysis result for SHA-256 46dc29f0c0e96db8…

MALICIOUS

PDF

81.3 KB Created: 2021-09-18 21:00:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 34076bef11d776bd1fe72586b17538d6 SHA-1: 5c58744680609ba0df2381a67fb7fda61b896550 SHA-256: 46dc29f0c0e96db856e49ba08f7da949007080cd6a1e2f5d4d5afacf350bf475
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous URLs, many of which are part of link farms on disposable hosting, suggesting a phishing or malware distribution scheme. The 'SE_CALLBACK_LURE' heuristic further supports a phishing pretext, likely aiming to trick users into calling a fraudulent support number or visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://drafthe.ru/uplcv?utm_term=when+does+the+shot+clock+start+in+basketball PDF link annotation
    • http://ckudzcssffhhj.handysociality.com/upload/files/laxepinavejudunabusapimu.pdfIn PDF document text
    • http://bbfederico2.net/userfiles/file/solif.pdfIn PDF document text
    • http://viorina-deko.com/images/file/waneguxametebeben.pdfIn PDF document text
    • http://villalapinetafavignana.it/userfiles/files/levexose.pdfIn PDF document text
    • http://grandioso.asia/editor_upload_image/file/92197370453.pdfIn PDF document text
    • http://vinhthuan.com/upload/files/pexifuw.pdfIn PDF document text
    • http://giasuthienphuc.com/Images_upload/files/74044395075.pdfIn PDF document text
    • https://www.hkfew.org.hk/ckfinder/userfiles/files/96092415760.pdfIn PDF document text
    • http://rockhousemethod.com/ckfinder/userfiles/files/fapatapibifumomu.pdfIn PDF document text
    • http://worldtile.net/jangheung/userfiles/file/99194295491.pdfIn PDF document text
    • https://hotelgaric.com/upload/datoteke/togopelulejozatomejagene.pdfIn PDF document text
    • https://adlinefor.com/home/webagen/public_html/korn/data/file/96889833115.pdfIn PDF document text
    • http://taikenplan.jp/ckfinder/userfiles/files/jekoke.pdfIn PDF document text
    • http://salman-group.com/userfiles/file/51340649275.pdfIn PDF document text
    • http://hanasushimenifee.com/uploads/files/5196433223.pdfIn PDF document text
    • http://cx-gl.hu/images/files/61449732215.pdfIn PDF document text
    • http://goldendazzle.com/upload/quangtri/files/wodexizujekido.pdfIn PDF document text
    • http://cleanking.net/userData/board/file/vebakunasufoforil.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1613d32c75f060---76208047738.pdfIn PDF document text
    • http://meuble-tunisie.com/userfiles/file/78811853934.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1613b7399850b3---90896432069.pdfIn PDF document text
    • http://phutungquanghieu.com/app/webroot/files/ckfinder/files/61137776720.pdfIn PDF document text
    • http://fotografiafrancescosomma.com/userfiles/files/munimixokexusewutunaf.pdfIn PDF document text
    • http://zonazero.es/userfiles/file/fufuvamigaluvu.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/30606903288.pdfIn PDF document text
    • http://ekhoron21.mn/uploads/files/1855036253.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_off0000d7cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CC 10692 bytes
SHA-256: 7943e90662f5b3052dcf80b55876bfaac7f4f7b5cb125eccbdbe2670c4a5fa7b
font_01_sfnt_off0000f049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF049 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001085b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085B 18028 bytes
SHA-256: 424d2e5a7d54553dcbd4ab4d249797ecc846b443cbfac667e3e312c0b9c8e4b6