Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5b2afe1e678d85c…

MALICIOUS

PDF

64.5 KB Created: 2021-01-01 02:12:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: bce98cbc4e6e2a798596d5db53a4492f SHA-1: 098cd6cb593369515714398011eae4ca61972270 SHA-256: f5b2afe1e678d85c8b32865ead829ee44fe205941c49c6d71a20cad580bc3b2b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/shook?utm_term=ates+ve+su+5+ucretsiz+indir PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384831/normal_5fb5b9e33af55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381971/normal_5fcee649e33c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476925/normal_5fc830293aeb7.pdfIn PDF document text
    • https://cdn.sqhk.co/terexugureto/bifuidS/puppy_dog_full_hd_wallpaper.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417128/normal_5fd03744aaf3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_5f8ec258ee920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f87a56cd6bf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448547/normal_5fdf1801aee1a.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/novifamigot/ceqa_guidelines_section_15301.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/faxanekugixumezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c573b7-098e-4294-938e-ced602b5189e/96394833542.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/oxford_oregon_debate_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/android_checkbox_button_style.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/72013473321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9236d690-e0cc-4fe8-86c8-a9b4b80da443/pocket_city_free_vs_paid.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_off0000c09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC09E 4912 bytes
SHA-256: 4b07e0ba2c6851b389c7b6ff8b2927736cf2524b939e1dddab4ba04c0210f112
font_01_sfnt_off0000d17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD17C 10584 bytes
SHA-256: 045644f91cd38f59e431d960d81752e5905388ccbc250dd8ef42182144931ba2