Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1967f27f6dc4023…

MALICIOUS

PDF

193.8 KB Created: 2022-06-08 00:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: e178c18ae6d92cb0ecbfd16a8a246230 SHA-1: cf084665032c04b88e7f1ef4c3dea74f2a682f37 SHA-256: c1967f27f6dc4023a32118192d45b77d3d2e76587a381d8a12a8d2b40f0cee92
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable hosting services, indicating a link farm designed to obscure malicious destinations. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the structure and URL patterns are consistent with a malicious PDF dropper.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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://sunuf.co.za/XSRYdR1H?utm_term=husky+c201h+air+compressor+parts+manual+diagram+printable+template PDF link annotation
    • https://gabopubowiton.weebly.com/uploads/1/3/4/5/134596717/gifemakolate.pdfIn PDF document text
    • https://badarezo.weebly.com/uploads/1/3/4/3/134362380/4066505.pdfIn PDF document text
    • https://zizovotitimojuv.weebly.com/uploads/1/3/2/7/132712514/9338125.pdfIn PDF document text
    • https://mavieromantique.com/images/files/kuxubarisa.pdfIn PDF document text
    • https://budepijakep.weebly.com/uploads/1/4/1/3/141322477/damureliraver.pdfIn PDF document text
    • https://nabexobajileg.weebly.com/uploads/1/4/1/3/141323133/1988584.pdfIn PDF document text
    • https://rebopugosoge.weebly.com/uploads/1/3/5/3/135346619/modonowojopevoj-xodelifabu-nuvezemisoru-vivivajabupiwe.pdfIn PDF document text
    • https://selotisatopus.weebly.com/uploads/1/3/1/8/131856190/zofurubeto_disozetaz_depiwelalura_kizepisetog.pdfIn PDF document text
    • https://terexazigezuw.weebly.com/uploads/1/4/1/8/141882164/e3299.pdfIn PDF document text
    • https://zozilevijuni.weebly.com/uploads/1/3/1/3/131383476/nanirafigofewo.pdfIn PDF document text
    • https://zafasasuk.weebly.com/uploads/1/3/4/7/134713251/5403260.pdfIn PDF document text
    • https://lushmark.com/editor_upload/file/73513136967.pdfIn PDF document text
    • https://darman.shasbod.ir/UploadedFiles/New/file/71027415988.pdfIn PDF document text
    • https://bitipares.weebly.com/uploads/1/3/1/3/131379103/6233161.pdfIn PDF document text
    • https://dibalinelig.weebly.com/uploads/1/3/1/3/131380687/moxof.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/wudivukener-sepixodudadus.pdfIn PDF document text
    • http://reliancefla.com/admin/images/file/95562554694.pdfIn PDF document text
    • https://larekupexog.weebly.com/uploads/1/3/4/8/134884129/af965860e.pdfIn PDF document text
    • https://bosagibanili.weebly.com/uploads/1/3/2/6/132682134/9845485.pdfIn PDF document text
    • https://jasiximipiz.weebly.com/uploads/1/3/1/4/131453573/9583752.pdfIn PDF document text
    • http://muzponycompl.muzpony.com/obrazki/file/jetumonikowosunize.pdfIn PDF document text
    • https://vavurozuzen.weebly.com/uploads/1/3/1/0/131070500/midoravido_galufabawu_jumuvowazesak.pdfIn PDF document text
    • https://katubebadidi.weebly.com/uploads/1/3/4/4/134474785/nozudetavimuze-datevu-ruxiseromer.pdfIn PDF document text
    • https://tebefatudu.weebly.com/uploads/1/3/4/3/134329870/lazubazote.pdfIn PDF document text
    • http://rs-entp.com/upload/file/gulunuzomi.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00028ce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28CE6 11692 bytes
SHA-256: ed73978135027b9b30b17968eb8ce9b2a0ddcc19bea3a39fb3edfa5dd7d7ecff
font_01_sfnt_off0002a83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A83A 21288 bytes
SHA-256: 1fa78f9789a6f438dab97140bd316269f5eded48a38c58c8dd1ba958406f9ba1
font_02_sfnt_off0002e056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E056 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1