Malicious PDF — malware analysis report

Static analysis result for SHA-256 142ccd16874018e3…

MALICIOUS

PDF

81.7 KB Created: 2021-04-06 11:18:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 8df40ad0d1b55fad5866adc7aacb7897 SHA-1: 6478ea07f2b3e6e234fae9b02040fe302b76508e SHA-256: 142ccd16874018e3b9830ce4ab20277046726a1ea79c861b5914b3a8bb24dcf4
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating the PDF is designed to host many links on potentially untrusted domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zulafadosulivi.weebly.com/uploads/1/3/4/3/134305332/meruzojakedubotava.pdf In PDF document text
    • https://cdn.sqhk.co/wefegiwezon/hcChiBK/dirasiludepuperovad.pdfIn PDF document text
    • http://kazaxukiga.getenjoyment.net/daikin_air_cooled_chiller.pdfIn PDF document text
    • https://wavimukuwu.weebly.com/uploads/1/3/0/8/130874629/gonutalawidi.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/idyR1ii/95362895145.pdfIn PDF document text
    • https://subijiderekura.weebly.com/uploads/1/3/4/6/134616270/ab395c33.pdfIn PDF document text
    • http://zenisir.22web.org/marriage_certificate_form_rajasthan.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/best_books_for_2_3_year_olds.pdfIn PDF document text
    • http://watulexop.iblogger.org/vande_mataram_lyrics_english.pdfIn PDF document text
    • https://cdn.sqhk.co/wosinuwukabu/rd3hegh/62835960740.pdfIn PDF document text
    • https://luselovuxetox.weebly.com/uploads/1/3/0/7/130739290/povibifuvajenobup.pdfIn PDF document text
    • https://cdn.sqhk.co/numokafas/hhgJhgF/deep_space_rush_achievements.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/1ijeMjj/microsoft_word_quick_reference_guide_template.pdfIn PDF document text
    • https://relitaju.weebly.com/uploads/1/3/4/8/134888942/6423093.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/vAIYpVcV8Aw/wb?keyword=like%20iPDF link annotation
    • http://fodixox.rf.gd/midovaxodudivisimimi.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/singer_1304_start_basic_everyday_free_arm_sewing_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/bejakun.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/aluminium_cladding_sheet_density.pdfIn PDF document text
    • http://movifeteruwif.rf.gd/badizi.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/47678745369.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/hansel_and_gretel_movie_2020_explained.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/95157742036.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_off0000fb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1C 5628 bytes
SHA-256: 1c6bea45aa7deb28761810b06c9a966e132ef4f7b920032c61bbe576826d46a5
font_01_sfnt_off00010e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E27 14344 bytes
SHA-256: 88a8186533338a04eba454c8b2fbb60ae22aa5d81c69143a8dd271819cd3e9ea

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