Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a3e85627393773d…

MALICIOUS

PDF

72.8 KB Created: 2021-05-22 12:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e1e61c06605cd5f46384a2e8f49dbc66 SHA-1: 82aff3d0ef1f2033c8d7f4c9debb75b067ba86ab SHA-256: 1a3e85627393773da2d18adab019fb55d92b8b8247e37911f36c70a024c8665d
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 0.9998

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://mezovuduw.ru/strik?utm_term=how+to+read+candlestick+charts+forex PDF link annotation
    • https://padubutidosose.weebly.com/uploads/1/3/3/9/133997835/mowokusulaz-puwojajoku-bavuzewilop-vuboninajan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407997/normal_604fa398dd74a.pdfIn PDF document text
    • https://xumotisububilup.weebly.com/uploads/1/3/4/5/134591263/3fe803c13.pdfIn PDF document text
    • https://sepiximefajo.weebly.com/uploads/1/3/4/8/134849953/5536541.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464850/normal_602e7f8370dbd.pdfIn PDF document text
    • https://kuxapularutamux.weebly.com/uploads/1/3/5/9/135984678/a41cf0276367ab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/buckout_road_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3cd15df-7bf3-4461-9fad-233abe541d27/how_much_does_a_keller_williams_realtor_make.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/empire_builder_game_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/do_you_need_an_apple_pencil_for_procreate_pocket.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/kagiludogefob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebb0948b-536f-401c-b373-4574e84a9073/hp_probook_6550b_review.pdfIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/avensis_2002_t0_2007_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/fishing_and_cooking_guide_horde.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/155bfbc7-0983-42a0-8cef-03e166c5cd30/11233977198.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/bullet_hell_games_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/vepamusenutas.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/madagon.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/clear_gelatin_sheets.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_off0000e12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12C 5292 bytes
SHA-256: 2340eb00076ac30098fbbda266ebd5a055653d3896372ab931e72d3822b98d91
font_01_sfnt_off0000f338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF338 10148 bytes
SHA-256: edc6503381560b1a95109b44178233e529f92bf177bebf699db50749cae8eee6

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