Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede9310bad578d17…

MALICIOUS

PDF

79.6 KB Created: 2021-04-05 17:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ca811de83766f45c2b536012411eeac4 SHA-1: 7439a67230a70864f87558bca16065572bb87d82 SHA-256: ede9310bad578d17f0fa6eb89a832b0680dff34ca0eb82e887ee69438771c82b
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 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/award?keyword=gym+ball+exercises+for+beginners+pdf PDF link annotation
    • http://sizegivip.22web.org/7818001032.pdfIn PDF document text
    • http://dalexepegubidi.iblogger.org/25151250628.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/669bc286-41b4-4a7f-8bdf-c7a985e2ca48/12990411174.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/170200bd-2c54-4ce1-a606-df65cda728ea/91212361800.pdfIn PDF document text
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_f44c568771b94c48a07e0ce1049e5d27.pdf?index=trueIn PDF document text
    • https://5b3fc17b-a4fb-4144-9a53-ff617e35bc6a.filesusr.com/ugd/696117_18da35f9468443508eb2e2ef093c551c.pdf?index=trueIn PDF document text
    • https://dd907c4b-492b-4b4d-bf3c-9f0b7a2bd2c7.filesusr.com/ugd/96a426_dc8b9cd4b12e45acb6a40045987f1a6d.pdf?index=trueIn PDF document text
    • http://viduzakovovamu.rf.gd/16172499575.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/927b6b05-3f82-4e37-bb31-f1ad5e78182b/rurozifokov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12d350a9-156b-4687-baff-6c4642656842/curso_tecnico__ensino_superior.pdfIn PDF document text
    • http://benipibidi.rf.gd/faxoxaxobi.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/bergen_performing_arts_center_englewood_nj_directions.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/pdf_adobe_acrobat_reader_8_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/corrugated_fiberglass_sheets_lowes.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/97947703004.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/android_test_deep_link_adb.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/tunavewumufixefajezu.pdfIn PDF document text
    • http://zaluboxif.epizy.com/pavifetiri.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/rakasugesadijegonumewes.pdfIn PDF document text
    • https://e5b7f393-9b83-42c5-a877-5b85c0c772c8.filesusr.com/ugd/77b42d_5faecf99cfbd44ce8212010eed7c6d1d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/oh_whistle_and_ill_come_to_you_bbc.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/tuwanadozewepogakavazule.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/tubiben.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_off0000f8e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E5 5816 bytes
SHA-256: 571cde51e3c07d328713ff25e29ea782623d400a89b72db2df87b0615a845b96
font_01_sfnt_off00010cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CAB 10588 bytes
SHA-256: fcc4c3b4791ac859edcf92bbb42834ee695de67f1bcfe7e6e31819b722e90a88

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