Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec9774306aaed69a…

MALICIOUS

PDF

85.5 KB Created: 2021-04-01 09:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 923f08e355c5c3d7f65e8ed35abb6d2e SHA-1: 9020eda8470799733274542213fe168a078299ac SHA-256: ec9774306aaed69abb33e6de15633a1731ad3a455d1e3bb46047f175aaeaf999
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=general+to+particular+pattern PDF link annotation
    • http://ruwemipuwev.mypressonline.com/36201186782.pdfIn PDF document text
    • http://dedigevobunobe.medianewsonline.com/xegazav.pdfIn PDF document text
    • http://vudasuti.mygamesonline.org/liwikusamisinixebuwexaxo.pdfIn PDF document text
    • http://kutivefivugokev.mypressonline.com/naxojipalo.pdfIn PDF document text
    • http://itanto.space/gbrmpa_outlook_report_20199ez8m.pdfIn PDF document text
    • http://wozuxel.getenjoyment.net/autoestima_para_nios.pdfIn PDF document text
    • http://baffer-shop.space/63331530760prd21.pdfIn PDF document text
    • http://tetupamino.mywebcommunity.org/systems_of_equations_and_inequalities_multiple_choice_test.pdfIn PDF document text
    • http://jasazotinalol.mygamesonline.org/6th_grade_math_fun_worksheets.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.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/06675ae8-06bc-4270-98f8-35ed4c4732aa/adding_fractions_with_unlike_denominators_games_printable.pdfIn PDF document text
    • https://676a7a22-5bec-432e-92e0-9d4a0a27851c.filesusr.com/ugd/a1fb72_3e50cd5908674e01b6ddffc6bdafa3eb.pdf?index=trueIn PDF document text
    • https://e82ff0bd-cb1a-4782-8b92-0a0fb7657660.filesusr.com/ugd/d17951_b0cc8bdb4cec46c29bdcce71e590a785.pdf?index=trueIn PDF document text
    • https://5da1c7d8-01c4-4175-bbf8-c25915566394.filesusr.com/ugd/1084fb_f113fd0ff03542e683542eadf17102df.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3b8b5f9-e840-4968-91cf-380815b66666/9381994277.pdfIn PDF document text
    • https://165abacb-5525-4e66-971c-c167d859e756.filesusr.com/ugd/f3f2a5_a7c0cf9ffb72479e8e6a04962a88b2a4.pdf?index=trueIn PDF document text
    • https://aaf2f8d8-4593-4070-95c3-ed2308805076.filesusr.com/ugd/337eea_dbef7d7db36c465196bfcb7084917cd2.pdf?index=trueIn PDF document text
    • http://pasifowon.atwebpages.com/visulimepowenan.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD50 4780 bytes
SHA-256: 2eaaa0a16c80eb8e8e4732fd2ddcc4e686278bac8085325888ecf85f13c33a07
font_01_sfnt_off00010d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9F 10840 bytes
SHA-256: 7f2da9d1910769317a314267dff0d636bb615fd8f201570dd49d66fa701b77b0
font_02_sfnt_off000132c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132C6 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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