Malicious PDF — malware analysis report

Static analysis result for SHA-256 0035b140f6bb0613…

MALICIOUS

PDF

90.7 KB Created: 2021-03-31 15:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3745b56dafebffe07838fd3dca82e090 SHA-1: eaa577c0bfaf40aace1c24cac5cacb23fb36e9ba SHA-256: 0035b140f6bb0613c25882cd90d81b787a0e5f6b8305b38b84c8ba40ea776411
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/wix?keyword=pioneer+fh-p8000bt+manual PDF link annotation
    • https://matomuzunoto.weebly.com/uploads/1/3/5/3/135389802/josokibanetexok.pdfIn PDF document text
    • http://legumajati.22web.org/43242392304.pdfIn PDF document text
    • http://bet-info.ru/cheap_dirt_bike_for_sale_near_mepqtf5.pdfIn PDF document text
    • http://simekavo.22web.org/roman_catholic_english_bible.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413982/normal_6022cf423bc24.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/6471910.pdfIn PDF document text
    • https://cdn.sqhk.co/rotonoba/MjqjdoC/cruise._com_customer_service.pdfIn PDF document text
    • https://webijizili.weebly.com/uploads/1/3/4/6/134609257/mokoxiputajofaz.pdfIn PDF document text
    • http://henrysavbr.site/8063447319z80xh.pdfIn PDF document text
    • https://surugodinatuv.weebly.com/uploads/1/3/4/8/134861851/kufevokaredanulora.pdfIn PDF document text
    • http://cardioactiveitalia.site/39977337575z7x3m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426547/normal_603ac4cbc7ab7.pdfIn PDF document text
    • http://vosejapixov.22web.org/49642260274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367273/normal_60571dfc384ec.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/glkiijh/37947139217.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rufofexejojar.epizy.com/attu_movie_ringtone_free.pdfIn PDF document text
    • http://zubidoziradep.rf.gd/neurological_examination_made_easy_geraint_fuller_free_download.pdfIn PDF document text
    • http://madekubadasa.rf.gd/jenakitanipijidupubolika.pdfIn PDF document text
    • http://kodasakame.rf.gd/tisivawagowiragigi.pdfIn PDF document text
    • http://mofizubekeji.epizy.com/lurisu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F40 2556 bytes
SHA-256: 3a0b3553b4406d721a7cf0b7467a5856de8b230ffac9762be526c7ec60ecc9d1
font_01_sfnt_off000119bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119BF 5472 bytes
SHA-256: 43e84d440157e665f8ddc86dc87a389798be0634dad0f5ebbdda2bd562f61b53
font_02_sfnt_off00012c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C2B 2084 bytes
SHA-256: f1565084cdf0dbf131c1a23a01305daafaa20cc169b95334531092b220095679
font_03_sfnt_off0001352e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1352E 13052 bytes
SHA-256: 2d216a645bd013340e42a1918c118ee032804339722d3220279d413903ab7f91

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