Malicious PDF — malware analysis report

Static analysis result for SHA-256 6707bc19a57069f0…

MALICIOUS

PDF

73.2 KB Created: 2021-02-21 21:11:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 24aa922165975427d1763df7609f35ef SHA-1: 63989bd95d4c5dcdb845b3bcbd0bbdd0d23540d5 SHA-256: 6707bc19a57069f0a30b54dd7416f23d0cfbe66b798200fd319b668225c3dd3e
184 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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=garcinia+lean+xtreme+and+apple+cider+vinegar In PDF document text
    • https://static.s123-cdn-static.com/uploads/4496605/normal_5fed9d10158d8.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/hbh2muw/sunrace_csm980_9sp._cassette_11-_40t.pdfIn PDF document text
    • http://bigtittybella.com/48580868975hadq9.pdfIn PDF document text
    • https://cdn.sqhk.co/wedifedaguju/cihCAWC/pibevofegulipukiginomono.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368745/normal_601d9150b2808.pdfIn PDF document text
    • http://wgathering.org/space_runner_3d_mod_apkhhzdj.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/igjbFje/bad_day_at_black_rock_fight_scene.pdfIn PDF document text
    • http://ver-alex.website/8107702753jnvp4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474736/normal_6008ea2603ac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476273/normal_602a551483abf.pdfIn PDF document text
    • http://nikecortez.net/coin_master_hack_apk_download_2020sojdj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366317/normal_5fd04edfe9e38.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/1ws7UCL/photo_gallery_album_download.pdfIn PDF document text
    • http://stankoff.org/domain_and_range_of_composite_functions_worksheets64wpw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382639/normal_5ff7170390107.pdfIn PDF document text
    • http://yatvoyya.fun/kumuxawelibvm241.pdfIn PDF document text
    • https://cdn.sqhk.co/xisalaximel/hHhgfVm/17870698986.pdfIn PDF document text
    • https://cdn.sqhk.co/vatuliwa/9jcphf2/10922993200.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_off0000e2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BF 5376 bytes
SHA-256: dc60fb5d7611b39d00724ec98e5448c759ffe89d47b8aa8a7e37c770acd9ddca
font_01_sfnt_off0000f501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF501 10184 bytes
SHA-256: 43b75bd84b81b08f15f8186b7d7e191844224c41aad1dd1c215db54b9f8eca6e

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