Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b078fdacd883f8…

MALICIOUS

PDF

97.4 KB Created: 2021-04-02 00:28:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 373a3ade89f23586f30745b7af0034e5 SHA-1: 229442f09216587ac535dbcae0267dbdb0774b36 SHA-256: 60b078fdacd883f867f29156e93b5deb1f470a174037e494fd006fa4529795e4
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, with a primary focus on a link farm hosted on disposable domains, suggesting a phishing or scam operation. The document body, though heavily obfuscated, contains keywords related to 'application for tc in marathi pdf', which is likely a lure to attract victims to the malicious websites.

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://gimoguvi.ru/award?keyword=application+for+tc+in+marathi+pdf PDF link annotation
    • http://astrology-personal.online/what_are_royal_bank_mortgage_rates_todaycwzz4.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafori/Khejxj1/pojidew.pdfIn PDF document text
    • https://zulijijala.weebly.com/uploads/1/3/0/7/130740393/bd5c1044.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453719/normal_5ff7adf693270.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/jifOzBa/pregnancy_trimester_calendar_week_by_week.pdfIn PDF document text
    • http://kneeksi.ru/rainbow_cake_with_cupcakes_goldilocksuooiz.pdfIn PDF document text
    • https://tifevijokob.weebly.com/uploads/1/3/5/3/135351552/5504955.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/ibuDjiM/10154885283.pdfIn PDF document text
    • http://helpverifybadges.com/arizona_martin_luther_king_dayduoad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458635/normal_5ff1dd2695dc9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367646/normal_5ffba5e74f207.pdfIn PDF document text
    • https://resodarapasak.weebly.com/uploads/1/3/4/6/134659305/9155141.pdfIn PDF document text
    • https://gefizubumob.weebly.com/uploads/1/3/4/4/134473977/xumovuwobew_konuxev_weriwabepona_jomevigowuruza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473384/normal_5ffce4611c6a1.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sogurorirerew.onlinewebshop.net/exam_master_december_download.pdfIn PDF document text
    • http://vakifavu.onlinewebshop.net/rwby_ruby_silver_eyes_fanfiction.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/apc_br1500g-in_ups_specifications.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/restaurants_biarritz_guide_michelin.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/96053075587.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/xazevegidoxu.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001466b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1466B 15088 bytes
SHA-256: 577ee7acfc8950d083ec944eebfbda96cdd8c0e0b80d1de502c71c7f6626afdd
font_00_sfnt_off000103c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C7 5204 bytes
SHA-256: 8fa9de0782684c36f664c2e0cb22723259b6aa41e8962fb74c09699b4ff7d760
font_01_sfnt_off00011550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11550 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off000120b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B3 10984 bytes
SHA-256: fedeac1c9497ea65f2846821332c3b01d8b27ebee72c43d4115bd4b3f5d13a43