Malicious PDF — malware analysis report

Static analysis result for SHA-256 063e62760ba65ddf…

MALICIOUS

PDF

90.4 KB Created: 2021-03-17 16:06:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3efe15060905759dcdb6bb282058267b SHA-1: 90df35d1ed7098fefb4744a1359fdb9a2e12bb73 SHA-256: 063e62760ba65ddf535ff76208ce5b63d051d0a301e6f36c5036dd1a00dfb967
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 0.9997

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://midufefew.ru/wix?keyword=hitchhiker%2527s+guide+to+the+galaxy+ending+song PDF link annotation
    • http://sdfafq.info/makenuxamaturuponiluxupzwxw.pdfIn PDF document text
    • http://thrivewebs.com/9234655854983x9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370530/normal_5fdaca0393180.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/zipazakafeguxefijid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460043/normal_6039d5a54c47a.pdfIn PDF document text
    • http://kutejovanog.getenjoyment.net/what_to_do_if_your_amazon_fire_stick_wont_turn_on.pdfIn PDF document text
    • https://cdn.sqhk.co/zifuvifiweva/urjhjgJ/download_best_voice_assistant_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/fivodewile/fbgdwjg/linaxodepumer.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/M4SihcK/26904602730.pdfIn PDF document text
    • http://rubyshup.space/sitchin_the_12th_planet3u0re.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
    • https://uploads.strikinglycdn.com/files/d45f39ed-d939-41f9-badd-575a28710ab7/exercicios_historia_do_brasil_enem.pdfIn PDF document text
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_98566e776a27495db079ff85cf82a36c.pdf?index=trueIn PDF document text
    • https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_3b40ffa83f514d3abd9b2478e01f07e3.pdf?index=trueIn PDF document text
    • https://926da24b-d3df-4aea-ac1b-ebdf7359a9e7.filesusr.com/ugd/fef925_acf3fbda933b444197322fa4c25bf28f.pdf?index=trueIn PDF document text
    • https://46c19374-600d-43be-a5f2-d8bf07c6fddf.filesusr.com/ugd/cc94a4_69739cb3ca12470db5647e3fddbf5163.pdf?index=trueIn PDF document text
    • https://728bf1be-24e3-4891-ba98-fedceca1a503.filesusr.com/ugd/3268c8_2a94de4db2f0428c90bf6d584743708f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/feb8340c-a4df-40d9-9dd3-b05443082543/duo_pressure_cooker_and_air_fryer.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_off0001142d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1142D 5312 bytes
SHA-256: 5b262789957a91a1f91722f6b20d09b77214d8ece349005056aaa074bf253af1
font_01_sfnt_off0001263c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1263C 11644 bytes
SHA-256: f306a08464fc8f575774cc4c3ffda13c599fd0b97bd613df27010279727d66db
font_02_sfnt_off00014da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DA1 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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