Malicious PDF — malware analysis report

Static analysis result for SHA-256 021f175f8c036bfa…

MALICIOUS

PDF

70.6 KB Created: 2021-03-11 17:13:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 31cb36f454167888281fa166084d5aa5 SHA-1: 289a7e66341cccf4e3282397f38a1232eefc4c52 SHA-256: 021f175f8c036bfabf0bb8fd9c0101167016f319d2662984ab18bc9069e730a0
136 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
  • 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://xezojetit.ru/award?keyword=parametrik+ve+nonparametrik+testler+pdf PDF link annotation
    • http://zuluwana.iblogger.org/74473124964.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394072/normal_6004438d6517f.pdfIn PDF document text
    • http://davupopebuwiser.sportsontheweb.net/al_quran_free_download_for_mobile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422135/normal_5ffe566055173.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/boating_knots_bumpers.pdfIn PDF document text
    • http://xibawolafubiz.getenjoyment.net/5854707505.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469349/normal_5fd909e8405d1.pdfIn PDF document text
    • http://gukabibus.mygamesonline.org/bixoledejezezajuvuwemedod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368468/normal_6029cd70dc7f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_603edd46a6882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505687/normal_602ad219110ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7875435-91d0-4bf3-9ed8-74f5da6e446c/kubota_bx2230_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/wudakelolanefulafa.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/49919574609.pdfIn PDF document text
    • http://bokonukavebuso.rf.gd/51686600014.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/android_convert_bitmap_to_jpg.pdfIn PDF document text
    • http://mituzoleti.epizy.com/gmail_spell_check_android_tablet_samsung.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/effc4f47-44b2-4737-af8d-8b15f7f416e7/is_shark_vacuum_a_chinese_company.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/what_is_the_best_robotic_pool_cleaner_to_buy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1a3a7d9-044d-4298-9a6e-4ea27aea0618/39283504474.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/scratch_2_offline_editor_pc.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_off0000d4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CE 5312 bytes
SHA-256: 7019f6ee511d8c9d7aa702b398f82f2bb57e3b4f0fbd412af0065f64191cb784
font_01_sfnt_off0000e6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D2 11728 bytes
SHA-256: 61775aa0573bba11beff3f78ed6e2b3a53d4389e317194b6adcc6d38196c99a3

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