Malicious PDF — malware analysis report

Static analysis result for SHA-256 e45d016b90d2bdf6…

MALICIOUS

PDF

73.8 KB Created: 2020-12-28 04:42:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 3436ec9662ccb9cad07c3b89d0e7a965 SHA-1: 6a3ae4dc8a99f746388c85cbdfed125a29352d84 SHA-256: e45d016b90d2bdf686dfeb58fd72fd9f94546770ae0d7866ebe6cba364deb1b0
216 Risk Score

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics as malicious, including brand-impersonation credential phishing and a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'Verizon identity verification', suggesting a lure for credential theft. The presence of external URIs, including one pointing to a redirector, further supports the phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kegozogoro.weebly.com/uploads/1/3/4/5/134525602/pijamopen_jejesixexef_xojes_lenogodes.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://trafffe.ru/strik?utm_term=verizon+identity+verification+not+working PDF link annotation
    • https://cdn.sqhk.co/vuxevabuvix/Nhhhig6/17049315244.pdfIn PDF document text
    • https://kegozogoro.weebly.com/uploads/1/3/4/5/134525602/pijamopen_jejesixexef_xojes_lenogodes.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/ifjghdh/82524801957.pdfIn PDF document text
    • https://cdn.sqhk.co/jevipugirofi/NlBiaxP/weekly_specials_near_me_restaurant.pdfIn PDF document text
    • https://mafopobivo.weebly.com/uploads/1/3/4/3/134322173/3d840ff94aa.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/dd9a978c-4f85-4cfb-9a2a-a6c81dd65a4c/gestin_del_talento_humano_3a._ed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2acf5753-a3dd-4662-a8f7-9730068a2ceb/tiwesiwiwuxexurulov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9f89c55-ca2c-410c-918b-82febde09c6f/sepupilowagopabugafosakud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/466f7b47-33b2-4ef9-ad0a-f836e54c9038/four_core_components_of_public_relations_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b73c4208-1594-480d-be2a-755fcb4e8830/fundamentals_of_probability_with_stochastic_processes_3rd_edition_solutions_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/375b93a5-00f4-4850-bff6-1128a4b0cc3a/dragonvale_breeding_times_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d62469f6-451d-4841-a2b5-3fdaae13dd6e/muvabolezixusosezovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9eb555c-9b86-458b-8aa3-7c48ad3f4ef8/lexurabi.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_off0000e2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2ED 5312 bytes
SHA-256: a7299240e1a71258610b208a905cd7ca9d69c0e4f9536bd374c63d436c641572
font_01_sfnt_off0000f540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF540 10904 bytes
SHA-256: a38cbd958109ef3ea1a16d81201e765288d0d431d3cb52175ac4c859cd1b3b53

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