Malicious PDF — malware analysis report

Static analysis result for SHA-256 3288a39649a3a8cf…

MALICIOUS

PDF

65.8 KB Created: 2021-02-17 08:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d0a875cb6d26946cbdfc2e0314a3778a SHA-1: 5a58e02d4baf9e1902f14eabceec1b26d3716649 SHA-256: 3288a39649a3a8cfc101ca93cea5b0b2083e82653cca143618af6786c481355e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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/wix?keyword=jay+z+blueprint+2+mp3+free+download In PDF document text
    • http://spencermcman.us/vidmate_video_er_new_version4xkms.pdfIn PDF document text
    • http://instahelpforbusiness.com/57219407430xb7zi.pdfIn PDF document text
    • http://debegezuvume.iblogger.org/runescape_corrupted_creatures_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411512/normal_602012f5c4d85.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/lekizopiloref/arjun_reddy_movie_bgm_songs.pdfIn PDF document text
    • http://zukegavodobuxas.epizy.com/bernhard_schlink_der_vorleser.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/afro_house_samples_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/android_autocompletetextview_dropdown_above.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/peer_review_performance_appraisal_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/non_integrated_accounting_system.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/freezer_temperature_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/aadhar_update_form_by_post.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/50436559689.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_off0000c355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC355 5676 bytes
SHA-256: fa43477364a298989d782d10561b6ba36cc046a2ea6f63a6d07a28eca760d482
font_01_sfnt_off0000d6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B4 10444 bytes
SHA-256: 39c04ddffee8302f6a0d5b84381ad90f50d79c85699e34fb7b720541cd47277a