Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f28eabade5f8d4d…

MALICIOUS

PDF

75.0 KB Created: 2021-01-29 10:25:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9496e90ecebceed72e07a1547192cff4 SHA-1: d658aa2f112d0d4bf2b24aa10ce080c39e1764e4 SHA-256: 6f28eabade5f8d4d47c262c49d7c84b37d7a178ece13335626991a58298cd0f9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://leonvi.ru/123?utm_term=createprocess+failed+code+2 PDF link annotation
    • https://cdn.sqhk.co/kobadaxo/jeihTic/30412458517.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxapivasif/9gjiftZ/1_to_100_numbers_in_marathi_words.pdfIn PDF document text
    • https://zimolitavok.weebly.com/uploads/1/3/1/8/131856331/zisivudilapedim_fumosejuwipaw.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/hiGjjhR/gaxosikapano.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/huhiK2e/67427796674.pdfIn PDF document text
    • https://masogivuxun.weebly.com/uploads/1/3/4/8/134887982/wodekiwazidiwi.pdfIn PDF document text
    • http://tonalemeketav.66ghz.com/46758490011.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/614f9f04c9.pdfIn PDF document text
    • https://xabejopoturidu.weebly.com/uploads/1/3/4/3/134352457/gerabizo.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/liguwubore/majotobex.pdfIn PDF document text
    • http://kufalogomisag.epizy.com/l_islam_et_la_science.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/azurine_pushback_manual_recliner.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/pazabavapu.pdfIn PDF document text
    • http://fotafufoka.epizy.com/49167163318.pdfIn PDF document text
    • http://jasigobup.epizy.com/39080558424.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_off0000e8f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F5 5188 bytes
SHA-256: 24e1f2865b2807c4e4fcc353f9463564d40b4a781e1d4f3b26243390cc69a097
font_01_sfnt_off0000faa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA4 10716 bytes
SHA-256: dc806fc6a53f3beea55a6da7bbc0bba3a37134ae5897a1f9a2e708611d11ff52