Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eaa75d05b4c821c…

MALICIOUS

PDF

70.3 KB Created: 2021-02-20 00:46:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ec53f894f777624b89d40f35879c0fd9 SHA-1: b94096254ecc9158569ea43a9146c894e91015e7 SHA-256: 8eaa75d05b4c821c769010a452803da06081a6d079bc3c59efb0908048cc60d9
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/wix?keyword=essentials+of+business+communication+10th+edition+pdf+download PDF link annotation
    • http://ligovezedeje.iblogger.org/city_of_stars_piano_duet_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/zatuwifezub/825APL0/74877674286.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/ibQvLij/werewolf_movies_trailers_2020.pdfIn PDF document text
    • http://sollabs.xyz/informal_letter_writing_format_cbse_class_8dfzuf.pdfIn PDF document text
    • http://nat-yoga.space/658248091730cfne.pdfIn PDF document text
    • http://nilitujawi.iblogger.org/onkyo_tx-nr636_price_in_india.pdfIn PDF document text
    • http://passive-income.ru/acronis_true_image_2019_serverhdjnh.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/icujhjb/zapovidewakumoko.pdfIn PDF document text
    • http://biolinkus.me/816532940029esvo.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/ggcsajg/24197774478.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/xidazeze/10560016402.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/78972680933.pdfIn PDF document text
    • http://nupuzasig.epizy.com/21806021203.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/majokegusuzuzevoda.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/michigan_proficiency_sample_test_2010_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/antenna_tv_lite_apk.pdfIn PDF document text
    • http://vuwejamadadodi.epizy.com/xupimejozeterem.pdfIn PDF document text
    • http://fetudat.epizy.com/rotewipexubabag.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_off0000d555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD555 5680 bytes
SHA-256: fc84da94456fef778e01191fdbce8e0c173afa0a2d07860423efa7178d30eb14
font_01_sfnt_off0000e89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89F 10180 bytes
SHA-256: 660384034e8d52172ce162457c3478fd5b8a012ace0bf8a2555693b38851b3ca