Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d92db9ba67fc94…

MALICIOUS

PDF

66.1 KB Created: 2020-12-01 05:25:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5865013f8daece550d4934986f64d347 SHA-1: 958ae3a3f7c345c6bd51c48bbece7205a877b29f SHA-256: d0d92db9ba67fc94037a6630028986353d4d9be1621696b32c5d786e64e16000
216 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses brand-impersonation credential phishing. 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 0.9998

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 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/862f27556c.pdf.
  • 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://trafftec.ru/123?utm_term=big+ideas+math+algebra+2+chapter+2+review+answers PDF link annotation
    • https://pevugubak.weebly.com/uploads/1/3/2/7/132740457/862f27556c.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/zogunulipikasajakugo.pdfIn PDF document text
    • https://dobajipewaxegas.weebly.com/uploads/1/3/4/6/134605260/fujuzazudofud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386836/normal_5f8ee1409a0d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369514/normal_5f9863ef2da9d.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/fb65a2ba-651a-4f9d-a586-1b31783b3d37/korew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b548256c-6680-40da-bfba-c72fffa13c15/kiss_the_rain.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/cinema_apk_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/advantage_carpet_cleaning_el_paso_tx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04aefbc3-e421-483a-b759-e7c7926e6d71/54624814354.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/simple_3_year_financial_projection_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7596e1a-b9af-4a43-84e0-ecd7263823f7/71072779767.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b03bbd14ff0dd2a824dd/t/5fc580ad3c02f22b9dc81d3f/1606779054195/gta_5_hotel_assassination_target.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_off0000c30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC30D 5960 bytes
SHA-256: b0c25d5edb26ce5b00e4472739a19d90a615c7699fce5a9d5d075bd96657fc93
font_01_sfnt_off0000d73f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73F 10632 bytes
SHA-256: a9e6de30707d4c534ac6c5021474a71ccba22766d2584820d606f347dbf1becb

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