Malicious PDF — malware analysis report

Static analysis result for SHA-256 7622e922d54a692c…

MALICIOUS

PDF

68.6 KB Created: 2020-11-24 02:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7c7aff10e5fabbe9a98cc1d712e1d665 SHA-1: 7cb2895d06c9dfb32b0b0b117b5a432abb0d939d SHA-256: 7622e922d54a692c555b65cbeec31de0cdc7e66c8277469ab7b5dff129b89447
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics indicate it impersonates a cloud document lure, instructing the user to enable macros or editing to bypass security. It also contains a link farm pointing to external PDFs, with one primary URL being `https://traffset.ru/strik?utm_term=mavericks+10.9.5+dmg+google+drive`, suggesting it's used to redirect users to malicious content or download further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://traffset.ru/strik?utm_term=mavericks+10.9.5+dmg+google+drive PDF link annotation
    • https://nokipudejavuf.weebly.com/uploads/1/3/4/4/134486619/gujedod.pdfIn PDF document text
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/8866459.pdfIn PDF document text
    • https://zufakuka.weebly.com/uploads/1/3/4/3/134343409/8212925.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403531/normal_5fa397a5d1c3b.pdfIn PDF document text
    • https://pajedurozibije.weebly.com/uploads/1/3/4/4/134446399/11e3c2bae53a85.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/bde19166-8b25-493f-8d40-24969f94a0e6/language_disorders_from_infancy_thro.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/fazoluxupavisivigobiguwi.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/tomtom_gps_download_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/a_thousand_pieces_of_you_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/thyroid_dosage_too_high.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/16969118634.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/unblocked_sushi_cat_2.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC1 5892 bytes
SHA-256: 6bc07f17519f7499a267fccd91992778fea8b6b6c1f3140de98729bb56236014
font_01_sfnt_off0000e2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D8 10136 bytes
SHA-256: 9255455b7f0e7c0c103b50a4f5a333bfd4c7f4952f39d91b45a87b5436a1c345

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