Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c5b2b524f746efa…

MALICIOUS

PDF

76.8 KB Created: 2021-03-10 07:41:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: cb4b926403021ade8566dd98b74ac957 SHA-1: 116841438423c57d753b3356fe029df524a5a38d SHA-256: 3c5b2b524f746efa8c187c03a15944441394d7e1b8219b460caa7eef20c16114
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://nipisod.ru/aws?utm_term=how+much+does+a+criminal+lawyer+make+in+texas PDF link annotation
    • https://kofagegupuk.weebly.com/uploads/1/3/2/3/132302723/9c8f5a.pdfIn PDF document text
    • https://mekebibarefuj.weebly.com/uploads/1/3/5/3/135335096/784f27d.pdfIn PDF document text
    • https://xesapexoxes.weebly.com/uploads/1/3/4/6/134633169/xeketuno.pdfIn PDF document text
    • https://gowumobajakexe.weebly.com/uploads/1/3/4/5/134585768/8771d271adaaf9b.pdfIn PDF document text
    • https://kerobasoxegetun.weebly.com/uploads/1/3/4/0/134017970/72c1f68122c35.pdfIn PDF document text
    • https://maninuwag.weebly.com/uploads/1/3/4/5/134577581/af3d20fa6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://50fe66f1-00be-429c-ab6c-57a9f80d6ab9.filesusr.com/ugd/39cb9d_b31e7f6613234ad78f179b30d053077c.pdf?index=trueIn PDF document text
    • https://676a7a22-5bec-432e-92e0-9d4a0a27851c.filesusr.com/ugd/a1fb72_63a2825aa0d14186bd67425081ef7209.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/forklift_training_test_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f7ccc80-ebce-4453-bea5-cb05b45777a5/44915859468.pdfIn PDF document text
    • https://b6de9e3f-c562-4e05-b5ee-70895c8060ae.filesusr.com/ugd/3801ff_6e0adceb4a6c4ae3bad614fd9f9d2c7d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/easy_faith_no_more_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f983dce8-eb02-42f9-b8c4-9629a9110ef8/the_family_crucible_napier.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ef225b-caaa-4c4a-bfe6-55266c8d8316/mabutelozup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb6fc1c7-271c-4902-8a60-1527291e4cc0/50138703582.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6297637d-bc3d-41cd-815a-8531a2a307e9/jurassic_world_survival_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/140463fc-6d5b-4a21-a02e-ed709958d2d9/xodizarim.pdfIn PDF document text
    • https://2a4065d7-883d-43e8-a524-7ce9aa4b4e88.filesusr.com/ugd/ccb1c6_4deafdbbfc684b4cb06862678e01fd06.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF4 5468 bytes
SHA-256: 23adae0150b173d29637168ceab08e6b68b1f0895766f7080e495b24fe541bac
font_01_sfnt_off00010076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10076 10904 bytes
SHA-256: f66dffca29ca6bb2f370b171bf5b4d8a8cb5ec549f1685525e31600a43bc6616

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