Malicious PDF — malware analysis report

Static analysis result for SHA-256 173143559e24c21c…

MALICIOUS

PDF

69.4 KB Created: 2021-02-28 10:14:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 453f88eaa61734857629e0a20d1163fe SHA-1: b9b76c1ca487b3af9bcb06302448b6e9a62e02ff SHA-256: 173143559e24c21c93096e440acc475be90d32ea4373f4aebdcf794443926fe6
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://ponafet.ru/wix?keyword=jean+m+auel+books+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5fd6778ee3e75.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/djfiel4/33900754825.pdfIn PDF document text
    • https://cdn.sqhk.co/mezigiduze/jaigzhi/free_ringtones_for_android_phone_call_music.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455198/normal_5fe33c41df03f.pdfIn PDF document text
    • http://luminar3-download.xyz/retractable_baby_gates_for_dogs67e3i.pdfIn PDF document text
    • https://cdn.sqhk.co/waxobakal/hbGgdYE/black_diamond_crush_coffee_table.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/KdhdiiQ/ea_sports_fifa_21_companion_download.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/kupixajopanivob.pdfIn PDF document text
    • https://cdn.sqhk.co/rukugewul/hjddeij/17903052160.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/85994123082.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/gikepojelivadevodesekupaf.pdfIn PDF document text
    • http://gupizamowakop.myartsonline.com/how_many_spell_slots_does_a_5th_level_warlock_have.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/blue_is_the_warmest_colour_mkv.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/five_nights_at_freddys_video_game_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/lost_ark_classes_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/biriyani_tamil_movie_songs.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_off0000d342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD342 5340 bytes
SHA-256: 87f64d519d75c8d80050f022face8d092efd8492fd5c736dff7c9f5571bbc641
font_01_sfnt_off0000e568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE568 10340 bytes
SHA-256: df5d366b9d8c6421eb2935760403aa79e425e0bcc8369749a648a95b97444ef8