Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8a6696e7ce22733…

MALICIOUS

PDF

80.4 KB Created: 2021-03-14 13:49:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: b9b1d14d171e9167589198085093bdc4 SHA-1: 5ac91bbcdcba4f7177cddf2d9c5afe007cdb79e0 SHA-256: a8a6696e7ce22733f3f04f98b151998960566f56c0a40304d84480b4bcd83015
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The ClamAV detection 'Pdf.Phishing.Trojan' and the presence of embedded URLs further indicate malicious intent, likely to redirect users to phishing or malware sites. No scripts were extracted, but the structure and embedded URLs point towards a phishing or content-scraping attack.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4828

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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/award?keyword=african+society+and+culture+pdf PDF link annotation
    • https://medogizelolu.weebly.com/uploads/1/3/1/0/131070938/sugobuzegefu.pdfIn PDF document text
    • http://yewes.space/60871538881ujj2b.pdfIn PDF document text
    • http://br1.red/resume_template_creator_freekk8on.pdfIn PDF document text
    • https://penopetidurip.weebly.com/uploads/1/3/2/8/132815040/wujibexopo.pdfIn PDF document text
    • http://lezigawojubitok.iblogger.org/bonnie_bainbridge_cohen.pdfIn PDF document text
    • http://motivawka.online/what_is_an_llc_for_dummiesfn9sv.pdfIn PDF document text
    • https://daxodewime.weebly.com/uploads/1/3/1/3/131398188/gekegep.pdfIn PDF document text
    • https://bexopugizabon.weebly.com/uploads/1/3/4/0/134042324/9156408.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a121017b-3fb3-450c-9156-48dd71a9bf80.filesusr.com/ugd/07625c_e61dadea76b447ac9c869f992aff1151.pdf?index=trueIn PDF document text
    • http://daremafuxabo.rf.gd/1000_bosquejos_biblicos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7201ef0c-858d-4a1a-86b2-716480a96c81/pofalavixasigume.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/what_is_the_ratio_of_nitrogen_to_oxygen_in_earths_atmosphere.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff207c11-204a-48d6-bd20-780af7770150/what_defines_a_seasonal_business.pdfIn PDF document text
    • https://01d7ec8a-e38e-4e33-8c76-1be31754498b.filesusr.com/ugd/24d943_12f00432e1044061a27897f04781fb6a.pdf?index=trueIn PDF document text
    • http://linakagiwabofa.epizy.com/alumni_registration_form_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fad051c-2bd3-4a8d-a0c1-1b96a516e673/suzuki_book_1_viola.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/yearnings_of_the_wind_piano_sheet_music.pdfIn PDF document text
    • http://fezaxakanopejux.epizy.com/oster_coffee_maker_instructions.pdfIn PDF document text
    • https://02ee9779-94d6-4ec7-959f-c0f99fe19a35.filesusr.com/ugd/cdc607_3f8480651602415fb0abfd1e0313547f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wutogugej/the_lion_king_full_movie_telugu_2019_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/788a25d1-65d7-4c3f-b29d-e745d5ad0d63/kopitisizekoxaro.pdfIn PDF document text
    • https://108bb973-5399-4bf7-a70e-a18780752cac.filesusr.com/ugd/760a88_392760c3c53646348138f2325aaf4998.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/tenancy_contract_template_abu_dhabi.pdfIn PDF document text
    • http://jubuzixabes.rf.gd/measuring_up_live_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0905a405-6fd8-4433-b7d9-c5f84685da98/hp_designjet_500_ink_cartridge_error.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/yo_tengo_tu_love_letra_y_acordes_de_guitarra.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACF 5240 bytes
SHA-256: e6dc79f79dba3ce92d4b78119c193874e6012d996c000b65fdd22f385a1f8301

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