Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97d97c84247152b…

MALICIOUS

PDF

75.5 KB Created: 2021-04-18 21:39:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9a39ef924ee847f5b10beaea701fe7e6 SHA-1: d09b69d679a22d2a3fd987f7c1ae0c51b7e54d09 SHA-256: e97d97c84247152be53b464c5bf1b08efcbc877829c94ad1947293494f7dbb77
194 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of an attempt to exploit user curiosity or trust to lead them to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/strik?utm_term=is+the+canon+mg3120+airprint+compatible PDF link annotation
    • https://paxudusumumo.weebly.com/uploads/1/3/4/3/134312151/vevomozuzewi.pdfIn PDF document text
    • http://joritirumag.mypressonline.com/dujebonekixofilusizon.pdfIn PDF document text
    • https://cdn.sqhk.co/guwaloxipete/C5PjhiI/how_to_draw_rounded_corner_rectangle_in_illustrator.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/hGhdjjP/47702362444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377098/normal_6054f13ce2c22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409393/normal_5fcefd9ab4e52.pdfIn PDF document text
    • https://jawonuvanez.weebly.com/uploads/1/3/6/0/136021807/vigiwowika_didutorunof_lezikazadeba_serudukozit.pdfIn PDF document text
    • https://palekamenagogu.weebly.com/uploads/1/3/2/6/132682235/juduraxu.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/butterfly_valve_price.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374199/normal_600d9a9c2c243.pdfIn PDF document text
    • https://pesudimudoselu.weebly.com/uploads/1/3/2/6/132681392/gunovo_zakenukofo_daruzo_lufesuxa.pdfIn PDF document text
    • http://titalat.iblogger.org/guide_maitrise_d_ouvrage_publique.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/ggBhidt/elite_space_trading_game_android.pdfIn PDF document text
    • http://fezideruxojogo.iblogger.org/certainty_severity_and_celerity_of_punishment.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xevivalekivo.epizy.com/buck_boost_converter_analysis.pdfIn PDF document text
    • http://fezolal.rf.gd/sifup.pdfIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_bef867d1723f4ee8aef002089ce3dd90.pdf?index=trueIn PDF document text
    • https://ad323f3e-245e-4e3c-8b16-de91fefec063.filesusr.com/ugd/5ea691_f03884c6fb804217924e094230aeed09.pdf?index=trueIn PDF document text
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_13440944cee048839310f6b21403b3e9.pdf?index=trueIn 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_off0000e769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE769 5916 bytes
SHA-256: a5f93c059ed9c8b0c82777ec2e3f176b9cc938c086cc32bb1f166c962a187ae8
font_01_sfnt_off0000fb5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5E 10888 bytes
SHA-256: 7e72449be7c3a19dc6f9899f386215c67636769c037bab36a3f352d5e021296f