Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9ccc921fc39896…

MALICIOUS

PDF

151.1 KB Created: 2021-01-09 01:10:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 61fc712ee3c5248775ffc7ff8f005a7f SHA-1: caf85fcb374443ad67e693e5f1b082e1b8e70661 SHA-256: eb9ccc921fc39896785cb7c505ecd4ad112c97638be64dbb580c9b13c273e8a8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://traffking.ru/123?utm_term=root+word+for+psychosis PDF link annotation
    • https://mibigadoguful.weebly.com/uploads/1/3/4/7/134759919/gadaje.pdfIn PDF document text
    • https://pezufefak.weebly.com/uploads/1/3/4/8/134865979/8431831.pdfIn PDF document text
    • https://cdn.sqhk.co/jumibizede/iiiihcS/bazavu.pdfIn PDF document text
    • https://vowevabejera.weebly.com/uploads/1/3/0/7/130775986/6435451.pdfIn PDF document text
    • https://tonavamajarow.weebly.com/uploads/1/3/4/6/134694337/8001524.pdfIn PDF document text
    • https://datagoso.weebly.com/uploads/1/3/4/7/134718767/8125933.pdfIn PDF document text
    • https://mafekesajivirik.weebly.com/uploads/1/3/4/3/134381466/vatajopo.pdfIn PDF document text
    • https://cdn.sqhk.co/zipodumup/Ygc9ii1/disney_wonderful_world_mod_apk.pdfIn PDF document text
    • https://vazewelekataba.weebly.com/uploads/1/3/1/6/131606588/remubutofosiw.pdfIn PDF document text
    • https://cdn.sqhk.co/kofosenolo/OcibhbR/bipez.pdfIn PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/0c512.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc39a6e-9c94-4820-bec8-3a8233b05a61/4439802981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e705cd5-a6e2-4894-a200-fafedb845e56/51827010932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bd9cd0d-94bd-405d-b80b-61637030dbfb/17566919855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e9fc9c4-d770-4cae-96dc-fba8d3ec7170/45400312613.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/507650b4-574c-4586-9c8f-5122197cc86e/jugavovefomitowujosetemuw.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://scripts.sil.org/OFLIn 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_off0001fdc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FDC7 5200 bytes
SHA-256: 3a8f831b728aa89d2ac03653816ca2d26bbc07e319786bd4726f528376b99ca7
font_01_sfnt_off00020f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20F98 13104 bytes
SHA-256: 245100c5aa737bc3faf727ef61255b4d56865384e5e7cc45541e159411a97875
font_02_sfnt_off00023a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23A81 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90

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