Malicious PDF — malware analysis report

Static analysis result for SHA-256 977c69ea88b2ba41…

MALICIOUS

PDF

92.0 KB Created: 2021-03-03 20:38:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 85e7796b5ac64bf67ff208a5b5206f8b SHA-1: 4be8307fa1ce907dca9a53068c035b673fcf9e38 SHA-256: 977c69ea88b2ba41acd675d9ed814ea223c277547d32d635246d186951cecafb
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, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple disposable domains, one of which is `momentikshop.space`. The embedded URLs and the nature of the heuristics suggest an attempt to redirect users to malicious sites for phishing or malware delivery.

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://maypoin.ru/wix?keyword=cat+ninja+unblocked+games+66+at+school PDF link annotation
    • http://momentikshop.space/puntos_craneometricos_del_craneo9cq3k.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/79727604487.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/how_to_scan_any_barcode.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/gghaRjj/47222938341.pdfIn PDF document text
    • http://ingmijn.com/fenotopotezajl82qt.pdfIn PDF document text
    • http://lavkavkusa.store/skyrim_aesir_armor_riddle_answershi5pi.pdfIn PDF document text
    • http://pelinebaj.mypressonline.com/cyberpunk_2077_johnny_silverhand_gun.pdfIn PDF document text
    • http://puwonasomoso.22web.org/pop_art_images.pdfIn PDF document text
    • http://1xbet-registr.site/443200379593idku.pdfIn PDF document text
    • http://bhd-management.space/kuzamejehpcv.pdfIn PDF document text
    • https://cdn.sqhk.co/digipexula/PijjhQA/recette_sandwich_mou_levure_fraiche.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pamajaxa.epizy.com/information_technology_meaning_in_arabic.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/21352693883.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/wofezilip.pdfIn PDF document text
    • http://wozimape.onlinewebshop.net/hunters_hunted_achievement.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/uottawa_clerkship_guide.pdfIn PDF document text
    • http://jowawaba.atwebpages.com/defiant_electronic_deadbolt_problems.pdfIn PDF document text
    • http://nowimirozox.atwebpages.com/sunbeam_heated_mattress_pad_-_queen_-_msu1gqs-n000-12c50.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/aha_cholesterol_guidelines_2018_ppt.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010cdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CDD 6744 bytes
SHA-256: ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425
font_01_sfnt_off00011dc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC5 5596 bytes
SHA-256: 016c52cb90773f4d62fe702051638452b1cd74f8e3bf32f4045f37953a6c6db1
font_02_sfnt_off000130a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130A8 10360 bytes
SHA-256: 41bb312a0f9e196e416284abfa57a9c3a44be822f81b67313e7cec43413b4463
font_03_sfnt_off00015421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15421 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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