Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec2a8aae5a52ee9c…

MALICIOUS

PDF

74.1 KB Created: 2021-03-20 17:06:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee656e1765cdff52a85269d89b3cc1f3 SHA-1: ed8b6670ae5c6f8a4118ae34f8a0a734ab9f4335 SHA-256: ec2a8aae5a52ee9c44845c4c529ce0e818dcd25dc2e2898272cb5f2c68386ee4
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one pointing to a suspicious domain, indicating a potential link farm or phishing attempt. ClamAV and ML classifiers also flagged this file as malicious. The presence of embedded URLs and the PDF structure suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/wix?keyword=shenendehowa+school+calendar+2019
    • https://zobagitolofoxaz.weebly.com/uploads/1/3/0/7/130739917/94a6860cd69f.pdf
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/rukero.pdf
    • https://sakurulemiba.weebly.com/uploads/1/3/0/9/130969926/torujedilaguruja.pdf
    • https://wufomuwu.weebly.com/uploads/1/3/0/9/130969972/gulikebumok-bafopibename-wabiwopivemofa-kukutowanibep.pdf
    • https://fawurefo.weebly.com/uploads/1/3/4/4/134441885/5717319.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5ba89893-eb73-4b57-bac0-e3ede49dec92/4708156623.pdf
    • https://03ca3561-abfe-48ca-9b59-b1b2b77f8126.filesusr.com/ugd/1af49e_8197d4f186ef4909bf3ceee84cdfe140.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1ae31673-4f85-49bb-8a32-a805a24fbcfd/mevamonasitugagufezakuzo.pdf
    • http://pesuvomekujidi.rf.gd/xamedesijovola.pdf
    • https://uploads.strikinglycdn.com/files/88d5505a-b879-4229-9b41-9f05c6a58972/badger_5_insinkerator_stopped_working.pdf
    • https://uploads.strikinglycdn.com/files/88780a50-a2f8-41c3-9797-305d4955a902/57210290379.pdf
    • https://c0b8f06b-4e98-4d3d-89ef-2f08caba629a.filesusr.com/ugd/0c8cc8_12562216a5ca493a8ff03a7afb87ebdb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b0a13654-06d4-49f1-937f-33ea3ac0bc3d/2017_jeep_grand_cherokee_trailhawk_owners_manual.pdf
    • https://uploads.strikinglycdn.com/files/2d2e7a62-2f41-41fb-987c-be67c0d73dd8/bojonupi.pdf
    • https://uploads.strikinglycdn.com/files/e95dedeb-efc5-4438-a046-0abfd8c1ab38/58906314490.pdf
    • https://6a9ecc2b-05c3-4056-8705-773ae6be8cdd.filesusr.com/ugd/7a359d_bf5fa489f8194c48ac6918dbed448ecc.pdf?index=true
    • https://uploads.strikinglycdn.com/files/69a93ba0-99d1-42b0-a85d-72d2ea552720/vipozovopijusoketu.pdf
    • http://kitukogoxav.epizy.com/amitav_ghosh_glass_palace.pdf
    • https://uploads.strikinglycdn.com/files/be6d7be3-56c6-4637-8547-27e837e99296/59831974332.pdf
    • https://uploads.strikinglycdn.com/files/56cc5eb7-4cf1-4ea2-94a4-c1bb6618bcb6/49539344521.pdf
    • https://uploads.strikinglycdn.com/files/8f38f98e-58e5-4538-9456-d8534600a352/brene_brown_shame_ted_talk_youtube.pdf
    • https://4eb83289-b313-4542-b68c-79a1d4783db4.filesusr.com/ugd/f6336d_8423ad7294b74a5baec62b2e3261e4bb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/596bad3d-1b4c-4aa9-87b5-6db5367ac044/vafijanubaxigugefofunise.pdf
    • http://revifobatuge.rf.gd/does_vizio_smart_tv_have_spectrum_app.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df95.bin
bd14970550f4464ffcb921231d9b112f0dce5e4f9d0c2509137804283801fa0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF95 5704 bytes
font_01_sfnt_off0000f308.bin
380f5c7f4a082db2025ee292e1de97fd24680bf8df670b19f481c16130dce655		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF308 11472 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.