Malicious PDF — malware analysis report

Static analysis result for SHA-256 53919e08a5182f11…

MALICIOUS

PDF

72.9 KB Created: 2021-02-13 16:20:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ea7e250c2b44af18a4722a25579d1a92 SHA-1: 30bf1dc2cdec018ba850c954429333cfed05571f SHA-256: 53919e08a5182f117d27011497f859dd409639faa447b78261e550884a600240
214 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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/wb?keyword=bluestacks%20free%20%20cnet In PDF document text
    • https://cdn.sqhk.co/datolabevev/ijjgjZj/immigration_nation_filmweb.pdfIn PDF document text
    • https://cdn.sqhk.co/wazilisiko/ggt5hg7/bowl._com_smart_account.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/ihWFesB/59955625045.pdfIn PDF document text
    • http://manybigs.space/82717905433usq3k.pdfIn PDF document text
    • https://cdn.sqhk.co/jesarijufe/iaQmgsi/96194594087.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosexotak/yjcichg/redixisudupe.pdfIn PDF document text
    • http://mivetys.xyz/9849760261456xu1.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/ayBiiib/double_dragon_shooter_steamroller_pipe.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/qjanV6K/pianizator_piano_tutorials_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/jidulopavoji/ciYJcsH/best_subscription_boxes_for_kids.pdfIn PDF document text
    • https://cdn.sqhk.co/rasufizo/39oIRji/90332848694.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/heXlJUF/93166418097.pdfIn PDF document text
    • https://cdn.sqhk.co/novitovikor/HiegeK6/race_time_predictor_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/Vjbhihe/shelter_in_place_texas_lifted.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445733/normal_5fca226a6d04a.pdfIn PDF document text
    • http://forecast.bet/equipment_world_spec_guide_2018yt3nl.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/i4xjijV/gepemimegesejidalize.pdfIn PDF document text
    • https://cdn.sqhk.co/jusitufugaf/ijibThj/officer_sheila_police_womens_costume.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dfb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB7 4988 bytes
SHA-256: d74802aab33e2c3c3cd88c987b419d652e52214d8a0d44d4d999aa5fcb756bc1
font_01_sfnt_off0000f0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C2 11100 bytes
SHA-256: 0f1b8c0dbcaff409b1f136d81b46c0b46baf358fc0989cc206949234ba853ede