Malicious PDF — malware analysis report

Static analysis result for SHA-256 159c2c1219bdab54…

MALICIOUS

PDF

69.4 KB Created: 2021-03-09 00:43:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1eee9fed31a0242e8f2ee964f2080fe3 SHA-1: d7fa26edbd3d943414d8cd5bdde6e23a0529c570 SHA-256: 159c2c1219bdab546d8ff9d2b102d845218f7e9689fe41b2eceec05a5db49892
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://seumenha.ru/wix?keyword=truesteam+humidifier+manual PDF link annotation
    • https://cdn.sqhk.co/diratukuz/aijvzO0/street_of_rage_2_game_download_for_android.pdfIn PDF document text
    • http://bbflowers.net/31919100837yorp8.pdfIn PDF document text
    • https://cdn.sqhk.co/nupopobax/hgcwRjg/beetalk_apk_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/dlNEe2B/fidget_spinner_project.pdfIn PDF document text
    • http://rentline.pro/3560835705ys024.pdfIn PDF document text
    • https://cdn.sqhk.co/mapexovebo/ja2ebcb/tifar.pdfIn PDF document text
    • http://moresukko.ru/436375577682r17w.pdfIn PDF document text
    • https://fumunavizagoz.weebly.com/uploads/1/3/4/2/134235019/8235751.pdfIn PDF document text
    • https://rakafofolobe.weebly.com/uploads/1/3/4/6/134649319/sufulapivuxa.pdfIn PDF document text
    • http://stassikorskyi.com/loxujorawidegolumixecatr7.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/diwitapezu/autosuggestion_21_jours.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4268f60b-5601-4fdf-bd9f-4473d0b591be/soccer_world_cup_winners_a-_z.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/49536318119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5f19925-62b1-4cb1-85c7-634bd8523123/32535787466.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/apache_software_free_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/bottom_bracket_cable_guide_halfords.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/99563743674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac5502a5-38ec-4374-a6d6-0fb0033c28cb/95910692569.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/saint_emilion_restaurants_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/how_hard_is_an_mba_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6131e4bc-827a-4d76-b036-bb4bb27a698b/twilight_saga_movie_collection_isaidub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fda3a1d4-7852-4c7d-aa8c-89450bde648b/wozawolu.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_off0000d338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD338 5096 bytes
SHA-256: bd0b9b48a6ead9bf2946628e8733462607d0b53cc2715863fa7a4ce1b779df34
font_01_sfnt_off0000e45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE45D 10536 bytes
SHA-256: 27cad6a2ac8f917bbb5bef383d81acfd77537b04d40cb73f0ab935354f2f5058

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