Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7622ffe20369e48…

MALICIOUS

PDF

69.7 KB Created: 2021-02-28 08:48:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: abbbb62d7b46c4aabf915d5212dc66e6 SHA-1: 63fe164619b3e36acd0c3ac1dc9805e2b285b155 SHA-256: c7622ffe20369e48eda17915f4f11c67a847d69e4caa08597417ab5e900fcbfd
134 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains multiple external URIs, including one pointing to 'soxebez.ru' which is likely a malicious redirection or phishing domain. The presence of a download button lure further supports a malicious intent to trick the user into navigating to a potentially harmful URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://soxebez.ru/strik?utm_term=speakeasy+ramen+springfield+oh+45505 PDF link annotation
    • http://com-connexion.xyz/76263217169yhj7l.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/17466180210.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/how_to_identify_howard_miller_grandfather_clock.pdfIn PDF document text
    • http://zefujixa.mywebcommunity.org/lolakupezoweturegibif.pdfIn PDF document text
    • http://bagesopabiwub.scienceontheweb.net/rebisokowabe.pdfIn PDF document text
    • http://desajegurake.scienceontheweb.net/kufeladiwiwiriwesek.pdfIn PDF document text
    • http://gakagebir.mypressonline.com/john_deere_x360_problems.pdfIn PDF document text
    • http://abwaab.su/virtual_race_car_engineer_2018_downloadi5l41.pdfIn PDF document text
    • http://lianhua.life/dreadout_full_movie_hd1s5ml.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484610/normal_5fe971377ee6e.pdfIn PDF document text
    • http://biwedujurar.mywebcommunity.org/11706396506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380411/normal_6031e7d56ac08.pdfIn PDF document text
    • http://zhk-rekord.info/magoosh_sat_test_prep_questionsc27or.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/61196430009.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kupezoru.rf.gd/57050507119.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/6011693871.pdfIn PDF document text
    • http://dorowoz.rf.gd/sig_sauer_p226_extreme_40_review.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/36107105861.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/world_map_framed_pictures_uk.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_off0000d058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD058 6076 bytes
SHA-256: f22914e6c0394d8e7a2676dca32e5ed10fa809d9a196fb23d16b3f43b048b660
font_01_sfnt_off0000e4f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F1 10740 bytes
SHA-256: cf3e7f2bfd993ba7b6b3cd6421e182a433b7c6869cfe6af807dfb6511354d83c

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