Malicious PDF — malware analysis report

Static analysis result for SHA-256 39132f42b8ef9a74…

MALICIOUS

PDF

72.7 KB Created: 2021-02-20 04:51:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a92795fac313f11bb2b186cb553512dd SHA-1: 979bf26d43caa5a640b087b74b448d7fd9641bde SHA-256: 39132f42b8ef9a741f768971da3be681d9459d38272efbf318ff10ed2458ee19
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://jacksth.ru/wb?keyword=maze%20runner%20the%20death%20cure%20trailer%20480p%20download PDF link annotation
    • https://vewutuzukep.weebly.com/uploads/1/3/2/8/132815207/26a7e267700e874.pdfIn PDF document text
    • https://dojosofezi.weebly.com/uploads/1/3/5/3/135390984/wunepepoxubil.pdfIn PDF document text
    • http://igonlinesupport.com/raxegazekuzabobevedowb1u88.pdfIn PDF document text
    • http://tiktokfrance.fun/bind_shell_cheat_sheetzl9jp.pdfIn PDF document text
    • http://uscarins.info/zuwaduxivurewosapijotuji5k0na.pdfIn PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/e98bf003dbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386094/normal_5ffd3bbb998f6.pdfIn PDF document text
    • http://apeech.ru/vazenef4lyvr.pdfIn PDF document text
    • http://goldenframecollision.com/viduzirubopuxowuis86a.pdfIn PDF document text
    • https://gonotelavekufuf.weebly.com/uploads/1/3/4/6/134615299/tefisurojut.pdfIn PDF document text
    • https://fazerirusabutef.weebly.com/uploads/1/3/1/3/131381144/2652013.pdfIn PDF document text
    • https://timelasabo.weebly.com/uploads/1/3/4/3/134345700/tifolozewomefek-kobakumagapo-savibimuxukud.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/acmeeia/rasemifi.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/banula/doggy_talents_mod_1._12._2_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/employment_news_paper_online.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_off0000dc89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC89 5556 bytes
SHA-256: 0acc15a64ce7694b0ba834184d791d936e83d93e7d5314f78b7eb48ac51c7e2c
font_01_sfnt_off0000ef9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9B 11712 bytes
SHA-256: 30b4bda9efeb49a07fe9ddc6546c9d447ba8fe5e7872d3f655f92d248a1c352d