Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd733f0e09659617…

MALICIOUS

PDF

64.9 KB Created: 2021-02-22 14:16:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d602a98ed0ecba8ca6b6a425a22c1b42 SHA-1: 6e3a043de69747acf74ee7614b8d5724806d2292 SHA-256: bd733f0e09659617dae2dd7f4f080915be7d947a0adad67deb8637e0c8fde115
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to search keywords, suggesting a lure to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jottigo.ru/wix?keyword=old+town+high+school+graduation PDF link annotation
    • https://cdn.sqhk.co/mizogujuzo/hjap5tV/amazon_alexa_show_8_stand.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/ihijvhg/free_wordpress_hosting_sites.pdfIn PDF document text
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/70ee2c9cbe.pdfIn PDF document text
    • https://cdn.sqhk.co/lonubugogere/jjPjfWy/come_fare_sticker_personalizzati_su_whatsapp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497646/normal_6001595526ad0.pdfIn PDF document text
    • https://jekosupoma.weebly.com/uploads/1/3/1/6/131637113/dorewesepebuj.pdfIn PDF document text
    • https://cdn.sqhk.co/xexanodu/gghgjha/huawei_game_center_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459058/normal_6012981a22fa2.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/F2hihed/jizoliw.pdfIn PDF document text
    • https://gemaxapofa.weebly.com/uploads/1/3/2/6/132681544/1542818.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416671/normal_5fe124a44c37a.pdfIn PDF document text
    • https://lixubirenolona.weebly.com/uploads/1/3/4/6/134669397/dizinulogovatewajedu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370089/normal_5fd987b6d3472.pdfIn PDF document text
    • https://nizedavigo.weebly.com/uploads/1/3/4/8/134879015/4350576.pdfIn PDF document text
    • http://kuvofejom.iblogger.org/92177437329.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/jedadokuti/elastic_and_plastic_deformation_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/cinderella_2015_english_subtitles_free.pdfIn PDF document text
    • http://sosisime.rf.gd/28050094059.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/career_coaching_evaluation_form.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/activate_windows_7_product_key_new.pdfIn PDF document text
    • http://pisumapopub.rf.gd/xulujazafawu.pdfIn PDF document text
    • http://valapapiwusujeg.rf.gd/xopepigilutogojun.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/physical_science_motion_and_forces_worksheet.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_off0000c0b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B4 5320 bytes
SHA-256: 59ba2f7f37fe19a6102ded29e0255ef0cf76a429203ba3a8271dc16545914c1b
font_01_sfnt_off0000d2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D3 10384 bytes
SHA-256: 52ef0f35f4bbc7ee3f28a7b6529fa7883c3e3a40043690be6aa7e71069b3164c

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