Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd098f6ba59047bb…

MALICIOUS

PDF

73.4 KB Created: 2021-02-13 21:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 72be76313c2421853869fd4a6277f301 SHA-1: 0244945f8819e0e46c6f903d5ba3c026fb4ef6e5 SHA-256: dd098f6ba59047bba248095727141edb18f400fc23e74e69ad28b099ad340b3b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://yafferge.ru/123?utm_term=how+to+do+mess+hall+osrs In PDF document text
    • https://cdn.sqhk.co/tatidukigag/hbKghjb/impossible_ramp_bike_stunt_tricks_race_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/lajefage/gdRYjjd/blackboard_learn_ua.pdfIn PDF document text
    • https://cdn.sqhk.co/kulizuxekume/f6iaAif/injustice_2_castellano.pdfIn PDF document text
    • http://itactical.xyz/little_fox_yarn_vixenzwlsp.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopiroxab/irNjbWz/zunugepawodusizoge.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/zagapaxa/12898155649.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/bronwood_upholstered_standard_platform_bed.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/kefaseware.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/algebraic_expressions_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/benny_hinn_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/dabanolajubirajapug.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/xuvulatekesovolojedoned.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/bigfoot_200_runners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/management_of_diabetes_mellitus_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/maya_animation_software_free_with_crack.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_off0000e420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE420 5120 bytes
SHA-256: 66fb525e7b021de9283f9720038920e082e2a0b0b723c1d7f5429ab32ee81cff
font_01_sfnt_off0000f567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF567 10344 bytes
SHA-256: b61674a99b7ea32e6d9f4241b3042d3da3dfb866f1eb956850a513f006015424