Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d2dca8aa3c345f6…

MALICIOUS

PDF

71.4 KB Created: 2021-04-05 02:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ccb8d82765c19d0ec991cfc3b45815e5 SHA-1: 3e7410251238ee49e11b31d1a10711e30ce8bbc0 SHA-256: 4d2dca8aa3c345f6f05f0796bf143b122af8eb95cc5cf1bd89c133f86233e24e
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and heuristics indicate it functions as a link farm, with one URL specifically mentioning 'credit card authorization form pdf template'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/award?keyword=credit+card+authorization+form+pdf+template PDF link annotation
    • http://tomogorman.com/39747482147y8agy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456134/normal_5ffb456b553c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489583/normal_600e0273af51a.pdfIn PDF document text
    • http://moresukko.ru/givawutexlhns.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378834/normal_6052b1e072de6.pdfIn PDF document text
    • http://fallofelin.online/sejogapikgwgzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387826/normal_6013645707168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402261/normal_6034f1ce355a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_604180ecb62dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_6060119a233ae.pdfIn PDF document text
    • http://ijmalan.xyz/pablo_neruda_poetry_poem_summaryg9tj5.pdfIn PDF document text
    • http://betmoy57.com/poker_guide_appyz3cj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529281/normal_600530e6c37cd.pdfIn PDF document text
    • http://piwupulor.iblogger.org/xitezuvixi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xelipiwaf.epizy.com/bestimmter_artikel_deutsch_bungen.pdfIn PDF document text
    • http://gapisoga.rf.gd/19869317856.pdfIn PDF document text
    • http://zezuwolajo.rf.gd/hp_laserjet_pro_cp1525nw_toner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c118f0b5-25f6-4a27-b929-934a171ac74f/simcity_4_nam_mod_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bb35032-1aaa-4f25-a0e7-8ac59b6197e3/magic_chef_4.4_cu_ft_mini_refrigerator_with_freezer_mcbr440b2_black.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acac282e-0212-4e2f-90e6-8c2da6d20718/anthony_de_mello_happiness_quote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b327e76-850e-41e0-886c-6f6d24293568/55476279001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bffcb90-fd9b-4462-88f5-a50295ae558d/42888000381.pdfIn PDF document text
    • http://rilobun.rf.gd/business_code_of_conduct_template_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10014a25-0c16-4f3d-aa27-f80fdfa2e898/35509714206.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_off0000d87d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD87D 5172 bytes
SHA-256: db339f87fadcda0681422c04405d90512c719e6686e5cf099d9cd015cc8cb0a6
font_01_sfnt_off0000e9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EF 11680 bytes
SHA-256: 4acaa9f8102a4a9492599cbfe5f845243fa11a3ff182794379b8afce0f59219d

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