Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae2291631289760a…

MALICIOUS

PDF

72.7 KB Created: 2021-02-17 16:30:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c42910c281c3c18b3bb5a3b287da89ab SHA-1: 6624c59552f584c2fbc572975ae292710d4bb170 SHA-256: ae2291631289760a14cad9a9131b1b6496280b914f85522e73c788856793267d
156 Risk Score

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-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://jottigo.ru/wix?keyword=621+area+code PDF link annotation
    • https://majotowuwirup.weebly.com/uploads/1/3/5/3/135346036/a8bf62593f0d.pdfIn PDF document text
    • https://gizumefelaz.weebly.com/uploads/1/3/4/3/134318195/pukuvozow_tobupig_xesofalemib_logifemopon.pdfIn PDF document text
    • https://bafewalu.weebly.com/uploads/1/3/5/3/135350628/5d453d74.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/Ggjjcge/weapon_mastery_calling_card.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/tiduro/what_shotguns_have_slam_fire.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/93943971273.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/pisarofawap.pdfIn PDF document text
    • http://nefedelabemusu.epizy.com/89301876042.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/disozakolinujodefarevo.pdfIn PDF document text
    • http://puferug.rf.gd/pamuzunedavavekaxupu.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/48552250118.pdfIn PDF document text
    • http://vixuzuvubus.rf.gd/bridgeman_downs_property_report.pdfIn PDF document text
    • http://lexawelezalum.epizy.com/platform_bed_frames_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/xuxuma.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/65296040102.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/sstream_header_file_in_c.pdfIn PDF document text
    • http://jigotubefaso.rf.gd/yahoo_finance_netflix_balance_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/61985219992.pdfIn PDF document text
    • http://zebafuvevejol.epizy.com/bowisipakojori.pdfIn PDF document text
    • http://vemusimovoxodan.rf.gd/32107318384.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE172 4968 bytes
SHA-256: ec1d823fa7f17a5f9abd0d5187884cd3ca4d98d4fd1c5ead3bfaa359ba55e24e
font_01_sfnt_off0000f26a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26A 10492 bytes
SHA-256: 8fa97cd861975bb6ca0af319ac944a0cacc5ccae10af890cd690ad1430ddc7e9

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