Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abcf287fbb4354c…

MALICIOUS

PDF

68.5 KB Created: 2021-05-12 06:24:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 6fe35e9f67a93eacc881bb7be00dfb4c SHA-1: 7be533a45177aa9ae3e2b4fc21ed33cf1c9acf8c SHA-256: 0abcf287fbb4354cfcb4db3068158f10c8ad80ae796f60386d7fd7331c5e1e77
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains numerous embedded URLs, many pointing to disposable hosting services, suggesting a phishing or malicious redirection attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed as a link farm on disposable hosting, further supporting a malicious intent to direct users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://mezovuduw.ru/strik?utm_term=iskcon+bhagavad+gita+audio+in+tamil PDF link annotation
    • https://gefawopunov.weebly.com/uploads/1/3/0/9/130969454/varoxuvekor-xuwokedagid-banixiz-lemove.pdfIn PDF document text
    • https://pafajawu.weebly.com/uploads/1/3/2/6/132682051/bisogiv.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/950fb4fa3ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383300/normal_600d35c7d11b5.pdfIn PDF document text
    • http://xevalarebufop.22web.org/secp_auditors_reporting_obligations.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494452/normal_5fee1166002b1.pdfIn PDF document text
    • https://cdn.sqhk.co/nedevupoj/dhjhNsU/bhojpuri_film_video_2016.pdfIn PDF document text
    • https://pagiwidew.weebly.com/uploads/1/3/4/4/134498508/tageximeralomi.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/i_want_to_convert_to_word_file_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_605a270e81d38.pdfIn PDF document text
    • https://cdn.sqhk.co/bedogipaxog/icEyFj5/castaways_campground_oc.pdfIn PDF document text
    • http://lamisorosasam.mywebcommunity.org/nepusafukalolafal.pdfIn PDF document text
    • http://pimesizawox.sportsontheweb.net/can_you_lose_weight_just_eating_tomato_soup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494677/normal_6016b4da6e816.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_603a15aba65c1.pdfIn PDF document text
    • http://xusonawifofi.iblogger.org/box_tops_for_education_products.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379379/normal_5fe021eda3ac5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ce58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE58 5456 bytes
SHA-256: f7166c00130f4c7e58bfc63e8bf11d73997094a103a5e6f0f81c322a5fc5ce11
font_01_sfnt_off0000e0cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CF 10640 bytes
SHA-256: b34641bcc1ad33f089c3f21bf0defa47434439c96416eb1a21e09dc51615b95a

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