Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0c074f209f7f18b…

MALICIOUS

PDF

77.4 KB Created: 2021-06-11 16:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 79b343ec07bafd936836f50d332726a0 SHA-1: 05c49a86a58aa90db5b8b1be900b8d1365eca97f SHA-256: a0c074f209f7f18b2109a33321eacc0f72e808bc8b73182320779705b20be237
186 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to attract traffic. The primary lure appears to be 'Minecraft download for android pocket edition', directing users to a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to phish for credentials or deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • 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
  • 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://garglob.ru/pbw?utm_term=minecraft+download+for+android+pocket+edition PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378843/normal_600205de66ea6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403141/normal_600b38d5cd35e.pdfIn PDF document text
    • https://miruvogix.weebly.com/uploads/1/3/1/4/131408245/nejidodujeve.pdfIn PDF document text
    • https://moremutinujiti.weebly.com/uploads/1/3/4/8/134865562/19bc49e03d.pdfIn PDF document text
    • https://xowunaxevome.weebly.com/uploads/1/3/4/6/134679103/2742936.pdfIn PDF document text
    • https://xogupugisi.weebly.com/uploads/1/3/4/1/134109029/butib_damekakodapi_juvat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495999/normal_5fe70dc720e77.pdfIn PDF document text
    • https://lemisisax.weebly.com/uploads/1/3/4/4/134494561/1913223.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491432/normal_602f710c26649.pdfIn PDF document text
    • https://wofogubegir.weebly.com/uploads/1/3/4/7/134728038/1102342.pdfIn PDF document text
    • https://jinepitabo.weebly.com/uploads/1/3/7/5/137515198/2886947.pdfIn PDF document text
    • https://danikobunib.weebly.com/uploads/1/3/4/7/134755608/ridizefopozexu.pdfIn PDF document text
    • https://sixusiwof.weebly.com/uploads/1/3/1/4/131454093/jilidokagolelekajig.pdfIn PDF document text
    • https://konilusikiwi.weebly.com/uploads/1/3/3/9/133986353/7660084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_602f00e01a74a.pdfIn PDF document text
    • https://temonobulap.weebly.com/uploads/1/3/4/5/134592988/8904771.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://febevolojezu.pbworks.com/w/file/fetch/144720717/the_secret_life_of_walter_mitty_movie.pdfIn PDF document text
    • http://jukozatixul.pbworks.com/w/file/fetch/144956178/quran_arabic_and_english_translation_and_transliteration_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17d64a29-8614-45f9-a5b8-e81339acd11b/define_developmental_biology_evolution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f8e62de-8cc8-4cdc-9926-55c89e19d119/51003846.pdfIn PDF document text
    • http://negaboxa.pbworks.com/w/file/fetch/144929043/hoyle_casino_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d64b672-6819-4401-8da5-6f48df1aca66/munapavesufedix.pdfIn PDF document text
    • http://zegugas.pbworks.com/w/file/fetch/145085340/gcam_latest_version_for_mi_a3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e7ad761-cf1d-4700-86a3-03463f7b873c/circling_idiom_worksheet_answers.pdfIn PDF document text
    • http://wukexav.pbworks.com/f/solidworks_2020_flow_simulation_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80bfe658-9c6f-4d45-80e8-99423e8183d6/20943748420.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_off0000e30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30B 4920 bytes
SHA-256: ca4068aac39300d52efbe607819d1a9f85c60839ed9fecc3aa3fc694b8c4e092
font_01_sfnt_off0000f3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DE 10520 bytes
SHA-256: 76bb8f88e5a8c2aca3479990bd6e9d51338fe8201eee75333de0a5a08e98f5f8
font_02_sfnt_off000117e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E9 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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