Malicious PDF — malware analysis report

Static analysis result for SHA-256 d010d5d6df96c249…

MALICIOUS

PDF

77.0 KB Created: 2021-04-08 01:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cc01b537d1ecc993f4a74c6d3e65cb42 SHA-1: ddc9028f10e9c7104ef81b5c9983238032b9185b SHA-256: d010d5d6df96c24952134708f5d2d3f98a054f909ae33082977e4d97e48edce8
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 0.9990

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://jottigo.ru/strik?utm_term=imax+b6ac+v2+charger PDF link annotation
    • http://siankaanmexico.com/80474639859v2kq3.pdfIn PDF document text
    • http://dle-tpl.site/blaze_obstacle_course_download_apkaeqs7.pdfIn PDF document text
    • https://cdn.sqhk.co/kofuvufexo/ohhHidB/post_traumatic_headache_treatment_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/vigesiji/8tHhigh/1395014554.pdfIn PDF document text
    • https://cdn.sqhk.co/buzovegom/idiajbs/wuzomewolotanido.pdfIn PDF document text
    • http://a1metromovers.com/autism_puzzle_piece_coloring_pagellfxn.pdfIn PDF document text
    • http://phrensy.co/cryptocurrency_trading_strategyno0jr.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/ghgMrHQ/21257151350.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuputid/kZghZif/katorebimolevupikizakafaj.pdfIn PDF document text
    • http://remont-pc.website/idioms_with_meaning_in_hindi4oxnn.pdfIn PDF document text
    • http://kinoxca.xyz/refivosinulalawifililorgjxhn.pdfIn PDF document text
    • http://katermore.ru/823245923mum5x.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/ZhdHrHG/ronaldo_soccer_clash_para_hilesi.pdfIn PDF document text
    • https://cdn.sqhk.co/pajerelo/N9jiChb/top_corrugated_box_manufacturers_in_usa.pdfIn PDF document text
    • http://idealsit.fun/de_cero_a_uno_libro_completould51.pdfIn PDF document text
    • http://freds.space/528367856505aben.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/zavefixakatokazolid.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/best_guided_tours_in_rome_italy.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/wovepejenibotap.pdfIn PDF document text
    • http://bejuzijufure.rf.gd/how_to_write_a_report.pdfIn PDF document text
    • http://mivogunav.rf.gd/caracteristicas_del_sindrome_de_asperger.pdfIn PDF document text
    • http://sumoguvovubipil.epizy.com/pavefamipaxawaxetulunano.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/73376555526.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e59e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59E 2828 bytes
SHA-256: 2f32373152b86590eb5c993bf8dbb57d20fc33770b92bc1ec6b5fd985d660553
font_01_sfnt_off0000efa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA7 5492 bytes
SHA-256: 45bdb8513eda273eabf80800a6d54f894580e75724d8e8ef3f77fec2e2d13808
font_02_sfnt_off0001023f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023F 10468 bytes
SHA-256: f56a4133d157f408013a041c9ae5fbb9cd3ac21a5c1fda75b1c55f02d78d5e05

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