Malicious PDF — malware analysis report

Static analysis result for SHA-256 47097de371c520a6…

MALICIOUS

PDF

72.3 KB Created: 2021-03-23 08:51:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9413bf7cda773460f85c2f3c88d73ec0 SHA-1: 53506fc9b6ed67a0b4ecc0f4f1f649cca5ab584f SHA-256: 47097de371c520a6b0de98bddb8ce00b9c10fc2868a703b3e6a355740e06f476
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 0.9996

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://kuzutuzo.ru/wix?keyword=hoover+steamvac+instructions+youtube PDF link annotation
    • https://cdn.sqhk.co/gerukoso/ghhdqyc/44423438533.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/cours_complet_d_apiculture.pdfIn PDF document text
    • https://lupipoga.weebly.com/uploads/1/3/4/4/134402738/siserife-sebap-tupareguzizizu-vibas.pdfIn PDF document text
    • http://xazowagef.mypressonline.com/nice_guidelines_caesarean_section.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/75371419364.pdfIn PDF document text
    • http://wugipesirexoxof.mygamesonline.org/the_celebrated_jumping_frog_of_calaveras.pdfIn PDF document text
    • http://wirobigi.medianewsonline.com/49099652254.pdfIn PDF document text
    • http://lopitimew.mygamesonline.org/dejozaxu.pdfIn PDF document text
    • https://jonaduxito.weebly.com/uploads/1/3/1/3/131384171/9989944.pdfIn PDF document text
    • https://xelavizagak.weebly.com/uploads/1/3/5/3/135325118/ff8b3f.pdfIn PDF document text
    • http://xokezuwadem.mygamesonline.org/principio_da_autonomia_titulos_de_credito_jurisprudencia.pdfIn PDF document text
    • http://didazema.mypressonline.com/clinical_virology_notes.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/could_luffy_beat_an_admiral.pdfIn PDF document text
    • https://weraxugunelega.weebly.com/uploads/1/3/4/7/134719696/b04c066.pdfIn PDF document text
    • https://jasugigikimodo.weebly.com/uploads/1/3/1/3/131383258/sizuf.pdfIn PDF document text
    • https://cdn.sqhk.co/wokiwife/k0LthgV/paintball_marker_rap4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wozimape.onlinewebshop.net/97671497454.pdfIn PDF document text
    • http://poburukexefisit.rf.gd/feasibility_report_sample_for_small_business.pdfIn PDF document text
    • http://repefewuvu.epizy.com/lagu_cinta_karena_cinta_metha_zulia.pdfIn PDF document text
    • http://wopapaxepesibad.epizy.com/45290412309.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/dezagizaxelo.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d03a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03A 5056 bytes
SHA-256: 311a0254c67fdb94f9f401994ef6e989473f8d61e30bd0c15030b480f3b0e5d4
font_01_sfnt_off0000e15d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15D 10568 bytes
SHA-256: 7f690dd4c6f12d5e629897f2a8dc434dfeca40f08711409fe1f0ee50d379a97c
font_02_sfnt_off00010540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10540 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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