Malicious PDF — malware analysis report

Static analysis result for SHA-256 676d37d75827034c…

MALICIOUS

PDF

80.2 KB Created: 2021-04-01 16:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 262d336638a429f80c28d436938cf673 SHA-1: 5816bdf34d276b25bf538f9ffe05b802b937176a SHA-256: 676d37d75827034c869ef0e35dd5dcbe4d3e42f4da4aeae0079d5d3d7d0d84a0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://xajibur.ru/wix?keyword=metodo+dandelot+pdf PDF link annotation
    • http://lonavipesikebe.iblogger.org/candy_compressor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376875/normal_5fdef914586eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385434/normal_6029319999f79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444648/normal_6065630135ff5.pdfIn PDF document text
    • https://cdn.sqhk.co/buruvalufe/ejbyjin/zumunevuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387421/normal_600bfe06c8160.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414494/normal_5fc92a0c5c4fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495257/normal_5ff9895959918.pdfIn PDF document text
    • https://cdn.sqhk.co/bezorufuv/7fAHGwW/wilderness_survival_training_florida.pdfIn PDF document text
    • http://linza.media/how_to_replace_pool_valve_actuatorgsmcy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386074/normal_5fd93df7ec114.pdfIn PDF document text
    • http://santand-es.com/99946720670m0aal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454289/normal_5ffc69349259f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464524/normal_605518901a0ec.pdfIn PDF document text
    • http://good-production9.site/how_to_date_a_browngirl_by_junot_diazmwxtq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411218/normal_6050414eb8952.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/hdbichd/sodetarumuzipetugusat.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/guxosa/blockbuster_song_starmusiq.pdfIn PDF document text
    • https://s3.amazonaws.com/toguvaju/great_compromise_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/how_to_make_easy_pop_up_cards_at_home.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/mimobasuforunefej.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/xamowenobil.pdfIn PDF document text
    • http://sasugokomelu.rf.gd/lake_superior_salmon_fishing_guides.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_off0000f946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF946 4764 bytes
SHA-256: 31de4dc6d8b2efce5e2667e85517318fbbaab640b41a1f72238b0039eff6a72a
font_01_sfnt_off000109a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A0 12512 bytes
SHA-256: 930df28e0f5968836ab036432cbeee25a9e84521a0192e0cd7d461295069b6b9

Open this report in the interactive analyzer, or submit your own file for analysis.