Malicious PDF — malware analysis report

Static analysis result for SHA-256 301e634a72b0d4af…

MALICIOUS

PDF

72.4 KB Created: 2021-02-20 22:13:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b322895f045993243c537a87ee0bd370 SHA-1: f3bd4ec4b5a4c5daef5e67a089deaa85b5210205 SHA-256: 301e634a72b0d4af0dd9ca3a503028c779fbba31155763b33481baebbd1e3af6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/123?utm_term=best+air+purifier+with+hepa+filter+for+covid PDF link annotation
    • http://ontrade.top/m_audio_firewire_410_driver_mac_os_x_10.9.5s3z7e.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvonazavo/1ja2hfw/dragon_robot_2_mod_apk_android_1.pdfIn PDF document text
    • http://digerutejonoju.22web.org/dell_precision_3630_mt_datasheet.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/lafanufoz.pdfIn PDF document text
    • http://jopekefepokideg.iblogger.org/how_do_i_connect_my_onn_bluetooth_headphones.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/i70wAWL/stickman_rope_hero_3_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/cjfrgyd/34.pdfIn PDF document text
    • http://tobalalupuvobiv.iblogger.org/30115917797.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/fedojigudaj/11084919585.pdfIn PDF document text
    • http://zekuvosaletum.rf.gd/89986078708.pdfIn PDF document text
    • http://bogutofiwib.rf.gd/softonic_chrome_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/xepatigugawimi.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/carkit_bluetooth_manual.pdfIn PDF document text
    • http://nonulalomijowo.epizy.com/entropia_universe_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/anandam_movie_hd_tamilrockers.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_off0000dcdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDB 5444 bytes
SHA-256: 35e7d35a31ee7a72a9f50dfd1cd0584c077240087c0b5bacec32d2e06c4449de
font_01_sfnt_off0000ef74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF74 10908 bytes
SHA-256: 3e51eec1f9b0c1fb65b271e046d1de9240eabdc28dd43a2b3d3da2026e998729