Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5f115938fb1afa…

MALICIOUS

PDF

72.1 KB Created: 2021-03-21 21:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 866ed82e1d9afe5eae0d814692f2e70b SHA-1: 90170c5f4f7c87d64e8c9c4b06af7a305076de1f SHA-256: 6d5f115938fb1afa4d097c281dfc773ed3a7ab37b12c0d007305eca051d3d9fe
66 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by 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 0.9993

Heuristics 4

  • 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://baarspo.ru/wix?keyword=nuevo+logo+de+la+iglesia+adventista+del+septimo+dia PDF link annotation
    • http://naturagrush.space/microsoft_band_2_meditation_app0ucxl.pdfIn PDF document text
    • http://samelike.site/sobilas3z7kl.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/62626718487.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/principles_of_microeconomics_mankiw_9th.pdfIn PDF document text
    • http://busivel.xyz/63227910392vycwu.pdfIn PDF document text
    • http://vepenuvix.mygamesonline.org/old_rugged_cross_lyrics.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/10904568324.pdfIn PDF document text
    • http://vumogegotawugub.mypressonline.com/dipuxanudepajigipo.pdfIn PDF document text
    • http://sagunutu.medianewsonline.com/66794297164.pdfIn PDF document text
    • http://lefibipefazefep.mypressonline.com/exemple_attestation_de_travail.pdfIn PDF document text
    • http://kadanijojabuf.mywebcommunity.org/subotibuvasujafaketivegag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://genolewedusu.myartsonline.com/ethical_conduct_in_the_workplace.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/pawalo.pdfIn PDF document text
    • https://ca483b97-61ac-4196-bca0-6b249c18eca9.filesusr.com/ugd/b27199_5e9e76f37861483e969f983eb577f64f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/tijarivabufuxax.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/81617904642.pdfIn PDF document text
    • https://45f91bdd-2b68-4e60-ae2c-b14373ae5332.filesusr.com/ugd/0d089b_2ca5de716a5d4dc7a495832dc9f86c26.pdf?index=trueIn PDF document text
    • http://xepuzakudera.atwebpages.com/motorola_g6_play_phone_charger.pdfIn PDF document text
    • https://7f1158f2-e44e-4cac-991a-806210d1dc3e.filesusr.com/ugd/e4a8e1_a90793a998ae40cbbf94e22df338c660.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/indian_army_logo_hd_wallpapers.pdfIn PDF document text
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_b937bd5f536d4a47b7c605fbd6939d97.pdf?index=trueIn PDF document text
    • http://muluwokixo.onlinewebshop.net/nawunawefulewaw.pdfIn PDF document text
    • http://buzanuziti.myartsonline.com/tuniwifelo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD886 5212 bytes
SHA-256: 054e0eb9940177e39db5217e2a519a75ad919d11f867b4eb678806f8878e11d4
font_01_sfnt_off0000ea3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3F 11792 bytes
SHA-256: d1efe21c94b3af2bd8afa2b66a75b566dfc7cd7f5d8b8e17e02141d939363ec8

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