Malicious PDF — malware analysis report

Static analysis result for SHA-256 22122802480932b3…

MALICIOUS

PDF

113.6 KB Created: 2021-05-15 14:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 71d0417969906eef2aa60c5ec63941b3 SHA-1: 7ef598e034cd487d98bba52e20585c13b85b7ba5 SHA-256: 22122802480932b3b8c1d24ca1fce08b69fe3f72af110425676e774e6c8df308
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document's primary purpose is to redirect users to numerous external sites, many of which are hosted on disposable domains. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 http://frut-tree.site/46704372439y4qah.pdf In PDF document text
    • http://muzoc.xyz/la_republica_de_platon_resumeng5dky.pdfIn PDF document text
    • https://dujomimip.weebly.com/uploads/1/3/6/0/136086420/6eee4.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/jijihji/tabletopia_premium_room.pdfIn PDF document text
    • https://lolutisoxat.weebly.com/uploads/1/3/4/3/134315909/reguke-gameg-gijapaxuvajan.pdfIn PDF document text
    • http://indohealth365.online/download_faily_skate_mod_apke6a4x.pdfIn PDF document text
    • http://uscovidcharts.com/rolling_stones_not_fade_away_lyrics_meaning1l9ub.pdfIn PDF document text
    • http://zevupixikug.mywebcommunity.org/neboma.pdfIn PDF document text
    • http://sellforce.ru/normandy_d_day_significancet7epz.pdfIn PDF document text
    • http://lubenoredeji.mypressonline.com/alopecia_areata_manejo.pdfIn PDF document text
    • https://mebifexet.weebly.com/uploads/1/3/1/3/131381374/b6f168a47fd485a.pdfIn PDF document text
    • http://torchland.xyz/iphone_11_pro_stuck_in_guided_accessn0qzq.pdfIn PDF document text
    • http://cookwellbakewell.com/samsung_ml-2510_printer0h6vs.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/ghifFur/pirizanuke.pdfIn PDF document text
    • http://mavitrade.com/how_much_does_itil_certification_costpm1x3.pdfIn PDF document text
    • https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/jodojaliza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/jJyWpsOf3IE/wb?keyword=company%20of%20heroes%20mods%20non%20steamPDF link annotation
    • http://rivoteb.rf.gd/how_to_remove_first_alert_smoke_alarm_battery.pdfIn PDF document text
    • http://mijikudetixo.epizy.com/harry_potter_characters_with_ginger_hair.pdfIn PDF document text
    • http://nudagimanefej.atwebpages.com/causes_of_lung_cancer.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EB6 5256 bytes
SHA-256: 213ba42c72318e787c7f487919713d9c398d78aec7056499a73fa1c8bd66eea8
font_01_sfnt_off00016066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16066 8756 bytes
SHA-256: 439146b7b5a8527f80311c80e8a385b08ee8c2f613ae1d2291afee869692b6d7
font_02_sfnt_off00017830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17830 12840 bytes
SHA-256: d587e10150c40345ddb378cff30ea6ef6e49c7b3ab3fa7c22c59c7d44c79c195
font_03_sfnt_off0001a2f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2F0 16264 bytes
SHA-256: f3d57df04cdb194e46cfff8b4835c5d2f279e7288315b2039a53678039656b22

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