Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eed612c3573b7c3…

MALICIOUS

PDF

97.1 KB Created: 2021-03-07 07:42:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7e6ef04e477c0021863b102fd1bcde49 SHA-1: f9642979de145896172eea68226ad7d5b0dd1f04 SHA-256: 0eed612c3573b7c3d1dfd7c06414753193fcbc32e3cec2929b0770fe5b586b32
126 Risk Score

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 0.9998

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://baarspo.ru/aws?utm_term=what+are+the+examples+of+ethical+issues PDF link annotation
    • https://cdn.sqhk.co/remozemot/850hige/yellow_jacket_sting_treatment_mayo_clinic.pdfIn PDF document text
    • http://puzexijabin.mypressonline.com/how_to_read_mm_on_a_ruler.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/37919628883.pdfIn PDF document text
    • http://jakesubinosol.scienceontheweb.net/jujujeterajixukipap.pdfIn PDF document text
    • https://cdn.sqhk.co/kakapoxavu/Q7UhgnY/15879159215.pdfIn PDF document text
    • http://wodedutipif.medianewsonline.com/ladorupupojidilan.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/FgfRicU/78644778358.pdfIn PDF document text
    • https://cdn.sqhk.co/mowanideju/bst7idy/interlock_dreads_vs_palm_roll.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d52aed46-be45-4f9b-8106-cf6fc7ee66c0.filesusr.com/ugd/b148e5_caaecf6ea2034238a6eed479f17e6baf.pdf?index=trueIn PDF document text
    • http://sudexixurijaxoz.atwebpages.com/72442589421.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/polypeptide_structure.pdfIn PDF document text
    • https://34e223d5-b18a-4f89-96b3-7c58aa965d90.filesusr.com/ugd/440e29_760bdd332b83454b902f5466bb638b87.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xidazeze/zavazodikimowojot.pdfIn PDF document text
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_6d888c1d7c4c4e80a0b482d5cc725a58.pdf?index=trueIn PDF document text
    • https://4c2674ec-1430-4cec-a455-d6a35d10586e.filesusr.com/ugd/38955b_026dc93d8a634eeb8886bc6aef67aa19.pdf?index=trueIn PDF document text
    • http://davofunup.onlinewebshop.net/respironics_system_one.pdfIn PDF document text
    • https://26f2e344-8444-46ea-90c9-5a893bcc2fb3.filesusr.com/ugd/b8c837_a3176f34060e47eeac1e8d1dbc498417.pdf?index=trueIn PDF document text
    • https://5cbbff6b-7c47-4fbb-abda-9de5069fbc88.filesusr.com/ugd/1a89c8_2f2df2059f224a2f8e2359b725273f21.pdf?index=trueIn PDF document text
    • http://buzanuziti.myartsonline.com/5246420633.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/47717052043.pdfIn PDF document text
    • http://sabixukavizom.myartsonline.com/fender_super_champ_xd_owners_manual.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_off0001415a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1415A 5336 bytes
SHA-256: 22b7d4281deae9f8bd02a6146ea64b506f49b47ada22fd4dd3f25261111723d4
font_01_sfnt_off00015368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15368 10400 bytes
SHA-256: 412684e375973d204a6410b6e79e9d3b0113c31bf3fa1065f5e9e525eaba07db

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