Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0dcec21615a490f…

MALICIOUS

PDF

79.8 KB Created: 2021-03-24 17:32:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 0a61c19b6d95f2286aed8c46d51b8254 SHA-1: 56524258ecb544728360feec62d265b992d6e9d3 SHA-256: e0dcec21615a490f6ac5509cb072252c7f86f7bae438fa94464ac7f971c101b0
194 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to distribute malicious content or phish users. The presence of a 'download button' heuristic further supports a lure-based attack pattern. While no scripts were directly extracted, the overall structure and heuristics point towards a malicious document designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://zajinet.ru/wix?keyword=menards+loafing+shed+plans PDF link annotation
    • https://zafudibibini.weebly.com/uploads/1/3/4/1/134108698/ximukebit.pdfIn PDF document text
    • https://tugigoboz.weebly.com/uploads/1/3/4/4/134499705/mepuboz.pdfIn PDF document text
    • http://tazizinujumijoj.mywebcommunity.org/list_of_countable_nouns_in_english.pdfIn PDF document text
    • https://matexofetuboso.weebly.com/uploads/1/3/1/4/131453592/motitilesod.pdfIn PDF document text
    • https://jurujixomegisi.weebly.com/uploads/1/3/4/7/134745805/98fe9f.pdfIn PDF document text
    • https://juguzitusiketi.weebly.com/uploads/1/3/4/3/134372303/945891.pdfIn PDF document text
    • https://zuvopiramalatug.weebly.com/uploads/1/3/5/9/135981479/e13ad157.pdfIn PDF document text
    • https://lexilovomab.weebly.com/uploads/1/3/1/4/131452944/fivuxozepof_xaror.pdfIn PDF document text
    • http://fitokaps.xyz/google_assistant_apk_for_android_marshmallowh782b.pdfIn PDF document text
    • http://wow50.pro/10151747063cbfw0.pdfIn PDF document text
    • http://excschool.ru/maths_worksheets_for_class_3_cbse4dmho.pdfIn PDF document text
    • https://totidulabi.weebly.com/uploads/1/3/1/6/131606487/6791252.pdfIn PDF document text
    • https://sugulidan.weebly.com/uploads/1/3/4/5/134508933/0db0167a42869.pdfIn PDF document text
    • https://taxezuwijukiwum.weebly.com/uploads/1/3/1/6/131606901/kuxiza-kiserekejek-fewibupe-rakalo.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/wekibik/descartes_3_meditations.pdfIn PDF document text
    • https://77ac2d45-d533-4b4b-a85c-01e81860bff9.filesusr.com/ugd/7f1ad7_2444a7e6ceac4279bdc12699ca720d47.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/bumper_offer_telugu_full_movie.pdfIn PDF document text
    • https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_8dcb635651894f39bc1740553a43bf04.pdf?index=trueIn PDF document text
    • http://lowuguja.myartsonline.com/b_d_chaurasia_anatomy_volume_1.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/92700666481.pdfIn PDF document text
    • https://9b704b87-3668-414c-a24e-b30400fe0e33.filesusr.com/ugd/51c472_cd883258881c46b7a23f42381b688c50.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/41920971455.pdfIn PDF document text
    • https://a581e706-3bf6-41fb-8978-ad4d4077590d.filesusr.com/ugd/afbe6b_97f0fb18713e4fe0a2666793d51c7878.pdf?index=trueIn PDF document text
    • http://rolubumemetujin.atwebpages.com/variateur_de_vitesse_altivar_312.pdfIn PDF document text
    • http://jawuwibunoropo.atwebpages.com/administrative_office_management_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/sociologia_de_la_religion_weber.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_off0000fa13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA13 5308 bytes
SHA-256: 0aa72f26a85f5a8615ad70e2b312c109a52e44f3db7149a4236877b206f85ac0
font_01_sfnt_off00010c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C29 11060 bytes
SHA-256: b7dd2fcb3e3113da77a5c6e80235192d16c85273b95431267ea5b973844dae3f

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