Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da0895f3ff98e89…

MALICIOUS

PDF

68.1 KB Created: 2021-02-21 09:55:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 46cf5fed0f9af8e38ac61416d2f0b136 SHA-1: 1cd123118e17805d9a6fe4a26a8c63fc99c49851 SHA-256: 7da0895f3ff98e89a021189b0f784fde5d9423564ed0e288a7b0823808484449
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jottigo.ru/wix?keyword=maytag+bravos+xl+washer+service+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490266/normal_5ff597bb5ca5d.pdfIn PDF document text
    • http://probnik1313.tech/ablerex_ups_user_manualqiu20.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/131531893515bys0.pdfIn PDF document text
    • http://urott-hu.com/davis_s_drug_guide_2019nh3um.pdfIn PDF document text
    • https://pezomivagijo.weebly.com/uploads/1/3/5/3/135392772/wupuv_sojepomawufe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416790/normal_60093eed4bd80.pdfIn PDF document text
    • http://gratoramaa.space/68201592515l76vc.pdfIn PDF document text
    • http://cybety.xyz/black_and_decker_coffee_machine_manualp7j4o.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/nufidibodudulad/99582124916.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/xikugukesubalosawo.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/best_sound_booster_for_android_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/hd_wallpapers_for_jio_mobile_1080p.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/84168292615.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_off0000ce2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2F 5680 bytes
SHA-256: 3fc2c4b3405f4926783247b55e5fd7ffaf69993757cde4615292e46275edf346
font_01_sfnt_off0000e184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE184 9972 bytes
SHA-256: 18a0ab03241653f659cc33f08629476cf6ba56fe8247b41c7a3eaf3098bdc21b