Malicious PDF — malware analysis report

Static analysis result for SHA-256 1962748ace030c17…

MALICIOUS

PDF

74.7 KB Created: 2020-12-19 13:42:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3568eca28b70aa8e6fde3f534b33827b SHA-1: 220c7c02adb6b8a2962b11e138f53317303b005b SHA-256: 1962748ace030c17c27ed9ec137caca2b39d821359554cd47ebddfb699bf4c5e
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector and part of an advance-fee scam, luring users with prize or parcel delivery language. It embeds numerous links, including one to known malicious redirector infrastructure at 'https://cctraff.ru/strik?utm_term=when+are+peonies+in+season+uk'. The ML classifier also strongly flagged this PDF as malicious.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://cctraff.ru/strik?utm_term=when+are+peonies+in+season+uk In PDF document text
    • https://static.s123-cdn-static.com/uploads/4466140/normal_5fc7e1643c1f0.pdfIn PDF document text
    • https://devuzagobeli.weebly.com/uploads/1/3/4/4/134431767/722ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481518/normal_5fbf6ac1aa213.pdfIn PDF document text
    • https://kudojazejugir.weebly.com/uploads/1/3/4/3/134322101/zewopirenesoz-jokaxugaginafa-gixokesim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499958/normal_5fd322ca66f89.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/86dae278-dfbe-47c0-be87-7c2970a3f5dd/88052345762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac4066e-bb58-452d-bbfa-a856eeb40b60/kingroot_apk_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b034d15-7232-4d1e-868a-a0300ec8fb89/shih_poo_for_sale_in_pa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2c9dcbf71053ccb1c52c0/t/5fcc25787ae85b53b281b8fe/1607214458254/south_park_super_adventure_club_real.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9356bdb-44cf-492a-8194-a01cfa7c4e8b/23907172152.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51391a8793968642310f4/t/5fc8980dd32d012678fdbf9c/1606981646693/61267139194.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eea5e802-499f-43a3-a40b-e844704373c7/64816772552.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35e62ba8-cf35-4816-b361-5a00e6d25f37/kogimunomarope.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6e50d9ea50d41209e2688/t/5fce7fe7a5ebd36cb829a519/1607368693107/car_parking_and_driving_simulator_mod_apk_rexdl.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_off0000e8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A8 4952 bytes
SHA-256: 6829b57481a15bdb05a636cec352891b06d2fe5d4ad56af5c197e4b93d33d2c9
font_01_sfnt_off0000f986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF986 10660 bytes
SHA-256: bb7d020bd3fa3f07ad4ae778547a64608f7b05328f9687f8813d58f770edb41f

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