Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c835ea054594a28…

MALICIOUS

PDF

71.3 KB Created: 2021-02-24 14:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 61a4b02a21396497954c0cd32c71bb6a SHA-1: dcac1f673345e23cdeb8850994351a938045cae9 SHA-256: 2c835ea054594a286b8e1165a869563ec3b72b09d84862293cd03d60300cd64f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://seumenha.ru/wix?keyword=asus+rog+hero+vii+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494452/normal_5feffffc63260.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481420/normal_5fecbcffb5508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497370/normal_5fda85e6af1ea.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/fjihbgj/enerpac_hand_pump_parts_list.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443588/normal_5feb204d39f70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413238/normal_5fecc1b2746f4.pdfIn PDF document text
    • http://about-central.com/compound_subject_and_compound_verb_worksheetsjffm6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_5fd3dac15b2d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417406/normal_60026799d5285.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/ieYnidp/gunivexigixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_601f8fc293c84.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pomaxa/sobilosatelu.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/what_does_the_wolf_symbolize_in_norse_mythology.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/wow_classic_leveling_guide_horde_mage.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/davis_s_drug_guide_app.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/81862069155.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/78449171621.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c34e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC34E 4952 bytes
SHA-256: c3600b54de1d035ed38d0d3a40fe4f4fc89ec2371894f0fdc902fa9287977cfd
font_01_sfnt_off0000d3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F8 10572 bytes
SHA-256: 483282d834e05acc8fc7e5e44814627645371a70d4d94b83f4f0a2dce0dda481
font_02_sfnt_off0000f80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80F 2288 bytes
SHA-256: f13edcd1b16d8b38b1602da0d6bf9f3e3d78ad9a4cb6796cd42cf5da8db76731
font_03_sfnt_off00010185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10185 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333