Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f6a62ef204102eb…

MALICIOUS

PDF

87.0 KB Created: 2021-03-20 00:02:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 177c27e937d53985674647a8fbcf345b SHA-1: cba1c828f1a4b1c6796e0429374da4572ce620e8 SHA-256: 0f6a62ef204102ebb8e11b998db67e38c02edf1ddfa0e493d16d45f45bddbf0d
156 Risk Score

Malware Insights

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

This PDF document contains a mass of external links, identified as a link farm, with one primary URL leading to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 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.
  • 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://lozipotod.ru/award?keyword=mind+power+exercises+pdf PDF link annotation
    • https://burodepizojeke.weebly.com/uploads/1/3/2/6/132696233/fizakasesipajaboniw.pdfIn PDF document text
    • https://valofapapedor.weebly.com/uploads/1/3/1/1/131164243/kitebafi.pdfIn PDF document text
    • https://genepuxomo.weebly.com/uploads/1/3/6/0/136053587/madusotilo_tagivafuse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471236/normal_602ee0215ce2a.pdfIn PDF document text
    • https://miwevedadig.weebly.com/uploads/1/3/1/4/131437981/c5414e2270.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486521/normal_5fca7a55c95f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503050/normal_5febda60d28f1.pdfIn PDF document text
    • https://pobunusegem.weebly.com/uploads/1/3/4/4/134460984/9899282.pdfIn PDF document text
    • https://japilulijerimu.weebly.com/uploads/1/3/0/7/130738614/rurisazitupujot.pdfIn PDF document text
    • https://sevujixosatanin.weebly.com/uploads/1/3/5/3/135316334/5bb36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465007/normal_602c22d622d7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474206/normal_603356b466b51.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/be0b5502-c3ed-4a71-b435-94b3a0c669b8/metal_gear_solid_5_ground_zeroes_full_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/what_is_iron_curtain_means.pdfIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/how_to_make_a_line_graph_in_math.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/duralast_jump_starter_with_inflator_900_peak_amps_fl.pdfIn PDF document text
    • https://48bd7725-9370-4d18-884e-e75d7b70c9c4.filesusr.com/ugd/f241d9_0db259ec35c64654a59bc57c0b35385b.pdf?index=trueIn PDF document text
    • https://832c8a8d-f05d-46e3-9166-97d9de82ace4.filesusr.com/ugd/432509_50954f6e9dd645119d5a42484f970cef.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/69f16127-c48f-4658-afca-248a4417aafb/2495715061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d33927d-7039-4178-bae8-c77029d7386a/samsung_hw-e450_best_settings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1da1aef6-c34c-4e9c-ab53-f4252a57299f/dell_precision_workstation_t7500_bios.pdfIn PDF document text
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_f41c96c4baa0438da4ead867c76fa07f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/spotify_premium_mod_apk_for_android.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_off00011753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11753 5072 bytes
SHA-256: d78ba69718057e9e932721093e6995b936843bcf463ee3f9ec877cfcdc9f70db
font_01_sfnt_off000128cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128CB 11144 bytes
SHA-256: 56a794eb93044920a67737c9d517983a47ac39511379db8e338cd0eb852a88e0