Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d206631dfc90ad…

MALICIOUS

PDF

65.5 KB Created: 2021-02-05 01:00:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 226df7f18005ca8dee8102a74b777872 SHA-1: d83723be819c1d462773a11c8e10810bc914ece5 SHA-256: a1d206631dfc90ad5f7d23c00d7eb470c712c2e7927f21a9cda8669bfdb641f0
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wb?keyword=berklee%20indian%20ensemble%20video%20songs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4443576/normal_5ffeba9cc01b5.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/9icgdhf/vieka_edits_videos_music_video_maker_editing_apps.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/fjaiflM/sixefezilodirisakox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468534/normal_6016e09b5956e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449776/normal_601a2ca4ae4b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410986/normal_5fe39a2d0b380.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456699/normal_6016fad2e59b1.pdfIn PDF document text
    • https://cdn.sqhk.co/bidelefo/5vZvT1z/the_world_ends_with_you_ds_ebay.pdfIn PDF document text
    • https://cdn.sqhk.co/sesedazaw/ha3SjjD/diwuti.pdfIn PDF document text
    • https://cdn.sqhk.co/bojidokagivi/ejhhcIH/harvest_moon_gameboy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492529/normal_6002891a41bb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412181/normal_60176d39c68b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://daraxojizusavu.epizy.com/romuvenilevigakudejeti.pdfIn PDF document text
    • http://nipuwiwabo.rf.gd/google_translate_app_apk_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/bone_marrow_histology_guide.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_off0000c29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC29D 5460 bytes
SHA-256: f0cb0d9e778938d2910b21eaf43af3d4fffa54ed33f4617e32e29d3da76de515
font_01_sfnt_off0000d522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD522 10520 bytes
SHA-256: be7f6a722ef79ed73256ee0d93700d0c5cef59ebc9e675babddbbe37b6472f24