Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce127c0c5eb77b55…

MALICIOUS

PDF

78.5 KB Created: 2021-05-06 07:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5c082e326a8643fe2b2c8b5caad0c325 SHA-1: d9d52adc7056d3e976ec6c74772468fb354165af SHA-256: ce127c0c5eb77b551d7685275a7ffa9e51477132fd00d8f312d47517e57e668d
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external URIs, many hosted on disposable domains, and is flagged as a link farm. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly indicates a phishing or scam attempt, likely to trick users into downloading further malicious content. While no scripts were directly extracted, the presence of multiple unknown URLs suggests a downloader or redirector pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://bologen.ru/strik?utm_term=chick+fil+a+nutrition+grilled+chicken PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482402/normal_60557ac5e9cd7.pdfIn PDF document text
    • http://tlgfree.xyz/zakepamufixit76vn.pdfIn PDF document text
    • http://vsspb.ru/fovelogitesavivuo4kiu.pdfIn PDF document text
    • http://jnatural.space/foxit_reader_printer_extension_downloado74uz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_606a8f7ce15dd.pdfIn PDF document text
    • https://poxolegap.weebly.com/uploads/1/3/1/0/131069824/fixokurobadode.pdfIn PDF document text
    • http://richmaya.site/cuando_empieza_el_otoo_en_californiahpqa7.pdfIn PDF document text
    • http://tryadasert.online/best_android_phones_2018_mid_rangev6e7w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_5fdbe2c902ca5.pdfIn PDF document text
    • https://rifonaro.weebly.com/uploads/1/3/4/6/134679964/jobamejuwi.pdfIn PDF document text
    • http://rentline.pro/yes_please_meals7kkka.pdfIn PDF document text
    • https://rokolumer.weebly.com/uploads/1/3/0/9/130969153/8927511.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369908/normal_5fecef4e73eeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426090/normal_60342775427f1.pdfIn PDF document text
    • https://zofitete.weebly.com/uploads/1/3/2/7/132740948/nezizosad-dobamumo.pdfIn PDF document text
    • https://moredotaze.weebly.com/uploads/1/3/0/7/130776260/rerizu-delozezuvisu.pdfIn PDF document text
    • http://sandwichhq.club/strongman_strength_training_programmezy5jw.pdfIn PDF document text
    • http://reduslimitalia-ufficiale.site/a_dolls_housemmurm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465149/normal_60369ecc53b85.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jikopot/table_tennis_score_sheet_11_points.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/mikisizamatox.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/harry_potter_and_half_blood_prince_dvd.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_off0000f441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF441 5076 bytes
SHA-256: 7cba3dec7755b1ef3adf41865cc38034869662d2c344f7b626026049bd2550bf
font_01_sfnt_off0001057b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057B 11456 bytes
SHA-256: 916edaf46059955ac6f3a24e9585b665e696e034a62292481f54c8822e76fe87

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