Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7b9a4b062c07f9…

MALICIOUS

PDF

76.5 KB Created: 2020-12-31 09:40:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ccfed3dda08ec30b85e2e626d2a6e9ac SHA-1: 3796e69d4c84325803ad13a9258a2efcb69f0419 SHA-256: 1e7b9a4b062c07f9f1c4b69bef5b337796d67574ad18004f2d4fc22f24a901b4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://traffnew.ru/123?utm_term=bulk+background+checks PDF link annotation
    • https://cdn.sqhk.co/baveninale/jhJdGeK/word_cookies_cross_butter_cream_15.pdfIn PDF document text
    • https://rimibike.weebly.com/uploads/1/3/4/6/134636102/6233869.pdfIn PDF document text
    • https://cdn.sqhk.co/bawivurolut/haPPggI/bolarek.pdfIn PDF document text
    • https://cdn.sqhk.co/nalomuxe/5hjcIBd/texewokumasoguxuvuwimege.pdfIn PDF document text
    • https://sokexuwog.weebly.com/uploads/1/3/4/3/134351495/lapikafegobomamibis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sabobenuwe/cg_police_def_merit_list_2018_download.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/website_analysis_report_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8855d44-edc1-48ed-bbef-aaacd72d08b4/49814629340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb0fb5c1-6371-45b5-9da0-53e281611c12/corbin_motorcycle_seats_for_harley_davidson.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/lobiwefer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d76bad43-f066-45f9-a3fa-c1955a5444c8/abcs_of_real_estate_investing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c55ef0e-1abc-4d36-8e26-8937ecb8bcad/83771767837.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/17355009836.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/25351598842.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE041 5208 bytes
SHA-256: 5677916363ffe96195f9bb6a1789d9138efce889cf833bf6fa522cc88ab766b5
font_01_sfnt_off0000f1db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DB 10904 bytes
SHA-256: 0c6064e8ee050711b30786784f998944cb0cc2e719104683ae9bc2f2527ccbcf
font_02_sfnt_off00011721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11721 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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