Malicious PDF — malware analysis report

Static analysis result for SHA-256 c54418d1a45a50cf…

MALICIOUS

PDF

72.6 KB Created: 2021-06-08 21:21:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9809b115e52ce4f2adb389e883e04720 SHA-1: 59f4bf54c180f88714b72218077ba3a991f5d25a SHA-256: c54418d1a45a50cf8e6a97d0916e014f2844e2bf89e14e48b7eb5706f803404b
126 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one prominent URL pointing to a site offering a 'best photo video maker app for android free download', suggesting a social engineering lure. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://pistant.ru/pbw?utm_term=best+photo+video+maker+app+for+android+free+download PDF link annotation
    • https://morekakenug.weebly.com/uploads/1/3/5/3/135335539/97c17c2.pdfIn PDF document text
    • https://fupigipefixoxom.weebly.com/uploads/1/3/1/3/131379213/874005.pdfIn PDF document text
    • https://luzatewuxajexi.weebly.com/uploads/1/3/4/2/134265782/fukivele-xuxovoroxis.pdfIn PDF document text
    • https://sigovopar.weebly.com/uploads/1/3/4/6/134632241/xegolenumexefozenun.pdfIn PDF document text
    • https://kisegeguz.weebly.com/uploads/1/3/7/4/137499338/nanivumevus_finizekirid_wejufoluwa_velawowoxifaxet.pdfIn PDF document text
    • https://goxapumub.weebly.com/uploads/1/3/4/8/134884232/fowezomoped.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376609/normal_5fef7b1ebfced.pdfIn PDF document text
    • https://womurozini.weebly.com/uploads/1/3/4/5/134507066/3175500.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454681/normal_600b9996242c1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuvebag.pbworks.com/w/file/fetch/144425091/39002861084.pdfIn PDF document text
    • http://kizisoj.pbworks.com/f/callers_cant_hear_me_on_my_iphone_7.pdfIn PDF document text
    • http://zegugas.pbworks.com/w/file/fetch/144632652/duzirititig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db762678-0813-4ec1-9bde-1866ed0f3306/89307711273.pdfIn PDF document text
    • http://bofamawetodo.pbworks.com/f/financial_accounting_and_reporting_2_solution_manual.pdfIn PDF document text
    • http://naxoxututal.pbworks.com/f/51186814750.pdfIn PDF document text
    • http://sijomirurefi.pbworks.com/w/file/fetch/144619845/corrective_and_preventive_action_report_template.pdfIn PDF document text
    • http://guronavageba.pbworks.com/f/nutigotugop.pdfIn PDF document text
    • http://molitutolu.pbworks.com/f/skyrim_can_you_become_vampire_lord_again.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ac580b1-28ea-4aba-9934-f69b61e73828/jusemuwiweloxog.pdfIn PDF document text
    • http://negaboxa.pbworks.com/f/defying_gravity_easy_piano.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_off0000df2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2D 5548 bytes
SHA-256: 6e8de1415c1d0c41f51a163122d29aba135ac749613a95ed0aebaac43d4dd921
font_01_sfnt_off0000f1f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F3 10144 bytes
SHA-256: 71586c07c1f39813c5bd7709e8d864d7095dd2103e6217bba8256005a2962bfb

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