Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc9d9fe72a2ca0ae…

MALICIOUS

PDF

82.0 KB Created: 2021-03-07 01:22:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d12e1d6ffbd779cb65c430fc38fb4704 SHA-1: dad2bca598aa43b9182954ac61df860dec3ffdcd SHA-256: fc9d9fe72a2ca0aeae0dd9c312093b55e32b5d2652db63bba75635f0f0af17e9
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 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.
  • 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://botokaw.ru/strik?utm_term=how+to+use+food+scale+bodybuilding PDF link annotation
    • http://proita.space/rachmaninoff_prelude_g_sharp_minor3dux4.pdfIn PDF document text
    • https://juwomazitebuden.weebly.com/uploads/1/3/1/4/131414743/31f692cf75d4db.pdfIn PDF document text
    • http://sweetygirl.club/jijuvivujife7ie5r.pdfIn PDF document text
    • http://rusakova.space/voice_recorder_software_for_pc_windows_10965gc.pdfIn PDF document text
    • http://botavubapisod.mywebcommunity.org/swiffer_wet_jet_refill_bottle_walmart.pdfIn PDF document text
    • http://ses-sanobrabotka.ru/libro_de_geografa_cuarto_grado_pgina_94gx0u3.pdfIn PDF document text
    • https://gejodawutu.weebly.com/uploads/1/3/1/1/131164152/vutilagifosi-sogilibuk-rulodol.pdfIn PDF document text
    • http://dalkomis.website/what_does_an_it_systems_manager_do4rquz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zizokeb.rf.gd/excel_vba_find_text_between_two_strings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4c68829-d41f-4553-9277-42872dfb142a/what_is_intercompany_journal_entry.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/28344448469.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/arts_culture_app.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/dimazumepezajubuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5e9087e-de30-41e2-8150-6d408dd351b8/in_cold_blood_age_rating.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/cayuse_424_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/38748953010.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/how_to_clean_graco_swing_cover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ec7375-50e8-434b-bbf8-6e5a24200e00/blues_guitar_unleashed_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e62b6f7-1de1-461b-b2df-08a00d08bd4e/tovodewiraxojo.pdfIn PDF document text
    • http://pinavobanokewix.epizy.com/gagijegefimuzeju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88501106-4aa0-41d9-a0cb-f0da5dd5a04a/nubiv.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10268 5388 bytes
SHA-256: 87244bd9e3c113fc9bc4cd8807ae9728f282aed224520b3cc942ae002ee6158e
font_01_sfnt_off000114ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114EF 11108 bytes
SHA-256: 833e81de4683b7934de592a361baf5b09e6ceebd6c1a23514347181380862877

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