Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d6295bd8a48fbf…

MALICIOUS

PDF

78.3 KB Created: 2021-03-24 02:22:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bd969b10df7659beebb5271ed333ae8e SHA-1: 3e440ad13c1edd67370b458a9a0b84f63037f342 SHA-256: 69d6295bd8a48fbf7a7699ca28f11054c71ca0b814bd2d22c5c4f3de7fdb8351
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/strik?utm_term=sps+commerce+acquires+data+masons PDF link annotation
    • http://dkblogin-de.best/keep_talking_and_nobody_explodes_ps4_without_vrzaau9.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/zJhdib5/airbnb_stock_name.pdfIn PDF document text
    • http://sabowupab.iblogger.org/84648063144.pdfIn PDF document text
    • https://lumuvimusu.weebly.com/uploads/1/3/4/7/134719948/946176.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/zotanonan.pdfIn PDF document text
    • https://cdn.sqhk.co/bezorufuv/i1jgjcN/modern_age_rpg_character_sheet.pdfIn PDF document text
    • http://ogranicbio.fun/how_do_i_check_my_icloud_storage_on_my_ipadj6jft.pdfIn PDF document text
    • https://cdn.sqhk.co/lemijexo/Kgf22eb/anger_of_stick_4_mod_apk_android_1.pdfIn PDF document text
    • https://tiwofimobodes.weebly.com/uploads/1/3/4/0/134040820/wedixek.pdfIn PDF document text
    • http://jobs-ingenieur.best/22675424602hme0p.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/j7ghhd3/verebe.pdfIn PDF document text
    • https://ranelelopo.weebly.com/uploads/1/3/1/3/131380755/5c620ca0bce.pdfIn PDF document text
    • https://cdn.sqhk.co/jupozaregu/oAa5ohj/kipevodo.pdfIn PDF document text
    • https://loloxemevo.weebly.com/uploads/1/3/0/7/130739498/2d40172d08a65d5.pdfIn PDF document text
    • http://wezotodatixazu.iblogger.org/20344370282.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/totutulajupodudasi.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/mizomotovubovurikiruxub.pdfIn PDF document text
    • http://gidojujejotimoj.epizy.com/87054585640.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/what_are_the_principles_of_aa_12_steps.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/what_is_pre_scientific_management_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/154518937.pdfIn PDF document text
    • http://nerokigonone.rf.gd/suwemorolomibi.pdfIn PDF document text
    • http://magivaxinel.rf.gd/chocolate_full_movie_tamilyogi.pdfIn PDF document text
    • https://s3.amazonaws.com/pasutiz/besalifafexibu.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_off0000f11a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11A 5416 bytes
SHA-256: a4e863d61be8d343939b676dc78267f4101b591b489f893aeaa94cb7e059b5cc
font_01_sfnt_off0001036a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1036A 11372 bytes
SHA-256: 7818a80ae9d55271e0466da1314e44970e329a343609368f803026672def1963

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