Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6211c5d5ce9579…

MALICIOUS

PDF

77.0 KB Created: 2021-03-20 06:07:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d0faa336a21298b193436a4d1428b93e SHA-1: 894eec728cf69ab0c3b71f8c6554817185f3c41b SHA-256: fe6211c5d5ce957940e52438b827a22541af024cb8ee74bc5c6f21f8b217e990
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, indicating a probable phishing or malware distribution scheme. The presence of 'utm_term' parameters in some URLs suggests tracking or redirection for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/strik?utm_term=jesus+was+once+a+little+child PDF link annotation
    • http://komaxinatobofe.medianewsonline.com/how_do_i_setup_my_hp_printer_to_print_wirelessly.pdfIn PDF document text
    • https://rojobasexadef.weebly.com/uploads/1/3/2/7/132711954/6e2e93ce8f8ea1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_605508086c9d3.pdfIn PDF document text
    • https://sozatugija.weebly.com/uploads/1/3/4/8/134859818/kapadibitadukezefi.pdfIn PDF document text
    • http://wabuxon.iblogger.org/kunci_gitar_lagu_bidadari_tak_bersayap.pdfIn PDF document text
    • http://tuvimokasodo.22web.org/printable_relationship_workbook_for_couples.pdfIn PDF document text
    • https://wijirejilape.weebly.com/uploads/1/3/2/8/132816202/lasebigisilurovir.pdfIn PDF document text
    • https://fekugutupufug.weebly.com/uploads/1/3/4/8/134876907/02da63e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392210/normal_6050222de6b31.pdfIn PDF document text
    • http://likefetevu.getenjoyment.net/53769133807.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498983/normal_604ec146920fc.pdfIn PDF document text
    • https://judorobizud.weebly.com/uploads/1/3/4/4/134455398/tixuvujapegorefaje.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464319/normal_5ff1336248357.pdfIn PDF document text
    • https://kibidabusiben.weebly.com/uploads/1/3/1/0/131070702/tufuvesujemimom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://genolesatoj.epizy.com/how_to_pronounce_entrepreneurship_pronunciationmanual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f2db726-574c-468c-a843-a566bd1c0812/how_to_set_up_voicemail_on_lg_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/429ff680-1065-45dc-b06a-a0afd5693e64/maytag_5000_series_dryer_screeching.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e66172c2-6af9-4041-b631-fce2ecfe37f8/52491630938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d5515cc-db81-482d-bb4f-e1a77a428e0c/are_tracfones_locked_or_unlocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f3f71ed-9009-4113-ade6-34b06cdc33b7/lajog.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_off0000f121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF121 5012 bytes
SHA-256: 5f1432bb6c9ef07096ed9fe002536175e8a39894c4f872706ad5df44c6845afe
font_01_sfnt_off00010236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10236 11008 bytes
SHA-256: 83d62690beea980fa573ddb2afccd7597ab5f8dcddd5e2c5f346d3b1c3ef7d57

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