Malicious PDF — malware analysis report

Static analysis result for SHA-256 09dc79937abd2270…

MALICIOUS

PDF

78.9 KB Created: 2021-04-16 19:37:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e4b0ce36092ef8a73971dbb981aa920d SHA-1: 1d8558b185aca997bd2c953ff02d207b1b9e0aba SHA-256: 09dc79937abd2270e38231d31a91a229dfe202e6e11f950d2154b865cf7cae00
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 0.9967

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://gimoguvi.ru/strik?utm_term=what+does+evicted+mean+in+virtual+families+2 PDF link annotation
    • https://cdn.sqhk.co/vozaxodep/cmghigd/votonidu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465249/normal_60395cf72e3df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417030/normal_5fe53b7c38e0f.pdfIn PDF document text
    • https://cdn.sqhk.co/felebamifuk/cia7jjf/hovercraft_takedown_mod_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/iDjgU9c/5047944345.pdfIn PDF document text
    • http://outputqwvk.space/63892162888jjdty.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/lista_de_verbos_en_ingles_en_pasado_simple_y_presente_continuowlmof.pdfIn PDF document text
    • http://itprod.space/dusopa58chk.pdfIn PDF document text
    • http://accueilcmb.com/pokemon_y_rom_for_android43eav.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/iihhef5/96373328558.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366024/normal_5fec1e5f7d466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415081/normal_60385c81308bc.pdfIn PDF document text
    • http://zadokutasige.22web.org/life_cycle_of_malaria_in_human.pdfIn PDF document text
    • http://fasumidivojasuj.iblogger.org/21449668261.pdfIn PDF document text
    • https://cdn.sqhk.co/lewiwifo/ibjc2hj/walking_dead_no_man_s_land_cheats_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/gitovera/qibihTL/diamonds_from_sierra_leone_lyrics_meaning.pdfIn PDF document text
    • http://timurberg.ru/pl_sql_for_loop_inside_selectckit7.pdfIn PDF document text
    • https://cdn.sqhk.co/sesexibanobu/6jelMsB/96478011794.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/cggjq42/patorepelesofipuwifo.pdfIn PDF document text
    • https://cdn.sqhk.co/forinabam/hj5UD97/all_social_media_sites_in_one_application.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/activate_b2_workbook.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://julizut.rf.gd/the_gilded_age_pbs_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06852609-f44f-4888-97f9-e2d26a762d4a/19350952559.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fd4b3cf-03d0-403e-80ed-3bab0e15cd4e/guzejesebajotorijumav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fec96b87-ad94-4ea4-808d-a2e3d151b083/futofenepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aa9f878-cebc-45df-9028-c0151d65f769/kobowoki.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_off0000f47c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47C 5464 bytes
SHA-256: 27793d483ce420d0d708aa1ca349f4daf71aea4c48b53f1066c769934184aade
font_01_sfnt_off000106f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F8 10936 bytes
SHA-256: 8215b4e56d0a3565f26ad5eae36734cee07dd9ec451b3bc8a57b139c277794b5

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