Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bc0c339b6f295a…

MALICIOUS

PDF

75.8 KB Created: 2021-02-15 00:41:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b946c3ca93c24a2a602a49ce888e7d22 SHA-1: af3a40632c710b15d184ffa6aac653651b8f96b6 SHA-256: 27bc0c339b6f295acf8746a057139c58f18f1c95f325c83f152202d783eacc74
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a prominent one leading to 'jottigo.ru', suggesting a redirection to a malicious site. The document body, though heavily obfuscated, contains text related to 'Crate and barrel nightstand lamps', indicating a lure to attract users searching for such items.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/123?utm_term=crate+and+barrel+nightstand+lamps PDF link annotation
    • https://cdn.sqhk.co/xafiguzi/hhayD9b/tipel.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/ghIhhKM/at_t_u-_verse_internet_troubleshooting_no_signal.pdfIn PDF document text
    • https://cdn.sqhk.co/kososojog/hbjhuij/33446719038.pdfIn PDF document text
    • http://bazis-rostov.com/zoho_crm_plus1roz1.pdfIn PDF document text
    • http://sawawobutexukut.iblogger.org/7777326237.pdfIn PDF document text
    • http://nugekurobeju.iblogger.org/stanley_furniture_dresser_drawer_guides.pdfIn PDF document text
    • http://fridgeservice.ru/772857168789mxqp.pdfIn PDF document text
    • http://mscredit.info/ganoguletea09dl.pdfIn PDF document text
    • http://zopetiwan.22web.org/95646259309.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/aeifhgo/start_em_sit_em_qbs_week_8.pdfIn PDF document text
    • http://storezone.info/death_road_to_canada_wiki_cool_itagr1d.pdfIn PDF document text
    • https://cdn.sqhk.co/bibilofefi/difgebC/retroarch_best_ps2_core.pdfIn PDF document text
    • https://cdn.sqhk.co/mezugifosa/J7NlAid/grim_quest_old_school_rpg_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/hSihNjc/pc_builder_sim_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tadeketoxab/ALghget/amazon_fire_tv_4k_ultra_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/ggZcX8g/vigukulotalanisojorazuvo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://timosawudub.rf.gd/wogukufaduvibasarutegub.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/dragon_ball_gt_virtual_piano_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/cameronian_rant_jig_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/atos_dos_apstolos_ellen_white.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/7254228295.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAE 3172 bytes
SHA-256: a24a1c15e1be3df48a0aff8967386e361b4cfc308bdb1a7e85656b02695f85f1
font_01_sfnt_off0000eafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAFC 5416 bytes
SHA-256: fd801a6d52d4d545037959f3487d4837065e4e50315961d830ee5f2c8d061020
font_02_sfnt_off0000fd33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD33 10712 bytes
SHA-256: 5eeea54ef05e717cf0d77079de699dc1880e79a9fed6100bd491e586c9eb8468

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