Malicious PDF — malware analysis report

Static analysis result for SHA-256 32625d7e24175955…

MALICIOUS

PDF

72.6 KB Created: 2021-02-10 16:10:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d27216dbf7713ece9e0cb8f5ccaf2264 SHA-1: 9594b7eac4793ff43527c6bb07b536ea4fd6de1f SHA-256: 32625d7e24175955fa6f3f84d2ead36ed57a0046f4f7dab86040dd3215a40d47
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded URLs, with one specifically referencing a 'minecraft 0.15.0 apk free download' lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, suggesting a malicious intent to distribute or phish. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://maypoin.ru/123?utm_term=minecraft+0.15.0+apk+free+download PDF link annotation
    • https://javesuput.weebly.com/uploads/1/3/0/8/130873829/xafikotipurega_mudazenunakap_sisanazumarudo.pdfIn PDF document text
    • https://cdn.sqhk.co/xalurubizud/ibhfW5q/xokaxageniwogivasoxo.pdfIn PDF document text
    • http://onlajn-kassa.ru/word_swipe_pic_202rdefj.pdfIn PDF document text
    • https://vefoxetewezelir.weebly.com/uploads/1/3/1/4/131483279/5317106.pdfIn PDF document text
    • http://macsk.space/plenty_of_fish_app_freew17jy.pdfIn PDF document text
    • http://xojudesabesone.66ghz.com/batman_the_dark_knight_rises_android_mod.pdfIn PDF document text
    • http://noziwop.22web.org/xezegojudetar.pdfIn PDF document text
    • https://tipoxuxol.weebly.com/uploads/1/3/0/8/130814923/953fc9e0.pdfIn PDF document text
    • https://kopusinuzek.weebly.com/uploads/1/3/4/1/134131929/4560702.pdfIn PDF document text
    • http://vajogeboru.iblogger.org/52671987205.pdfIn PDF document text
    • http://detonic-romania.website/mudunajtxvmn.pdfIn PDF document text
    • http://gofipupeseg.22web.org/boxok.pdfIn PDF document text
    • http://kizefet.iblogger.org/45340877537.pdfIn PDF document text
    • https://www.ringtonex.com/mp3/2020In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://joriboka.epizy.com/36800845106.pdfIn PDF document text
    • http://gopudagob.epizy.com/small_business_answering_service_reviews.pdfIn PDF document text
    • http://merojupamen.epizy.com/40963721889.pdfIn PDF document text
    • http://nozuwodapa.epizy.com/weather_report_for_columbus_ohio_today.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_off0000ddeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEB 5480 bytes
SHA-256: 64d2e09c6c7fbbe287c13b152bb44cc4b94af51549b5c2e40cdce67e8bcb87ca
font_01_sfnt_off0000f0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D0 10580 bytes
SHA-256: 829ca35ed482e61d97ae322ee00753f7adec03c9e8f8606c15f5891c76041f49