Malicious PDF — malware analysis report

Static analysis result for SHA-256 da5aed7e21de5a84…

MALICIOUS

PDF

76.4 KB Created: 2021-03-12 11:48:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 4681738ce6fc2e8e14428d409e4f777a SHA-1: 304fed1cc54343f7a83a70ad30b03489cdea768c SHA-256: da5aed7e21de5a84d71e91590950983d266835d7a1e34637b84fb86bbe033a8f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The document body, though heavily obfuscated, contains references to 'Akon real name' and the primary external URI points to 'https://bologen.ru/wix?keyword=akon+real+name', suggesting a lure to a phishing or malware distribution site. The PDF also contains a large number of external links, many of which are benign, but the primary malicious URL is the most significant IOC.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • 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.
  • 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://bologen.ru/wix?keyword=akon+real+name PDF link annotation
    • http://trudogoliya.online/puzzle_hockey_official_nhlpa_match_3_rpgbhhzl.pdfIn PDF document text
    • http://f1l3download.site/64402843178l40fr.pdfIn PDF document text
    • http://fullstacket.online/zijikatenebq3u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_654b818dd43044599ff06b121c71d0c8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vonutavekip/boxed_round_font_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b691305-f13e-43ad-8588-a402ef9f1656/pubuputaxolutefeju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc2ba63f-c84c-4398-a135-d7ae05a72b06/dimepavajeda.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/anticipatory_bail_application_format_in_high_court.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/024729cd-0586-4ae3-9ef0-a45bb94009f7/jozuwalolosanazudesi.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/bulova_marine_star_watch_band_size.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/mitorinujajevufebeka.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/does_procreate_work_with_ipad_7th_generation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06557207-17eb-4ebf-b01c-658c372cc107/kirolixuxobabigumes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/853c4285-a7f6-4dd5-b0f3-3b468fd051db/78039546410.pdfIn PDF document text
    • https://ac263381-fdad-4fda-ae78-6df6d71032d6.filesusr.com/ugd/25c42e_5494d3db8404413fbaa690f399637226.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/098b0f7e-5852-4610-a41b-fc5376f9435e/supakulig.pdfIn PDF document text
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_1e1b64ada2444764805dfea2cb33e7c8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/angry_neighbor_free_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/bafeba.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/movie_counter_archives.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a4ffa2d-55cc-4b95-8680-11e637644eb7/rival_ice_cream_maker_gc8151.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f45a91d-da7f-4d9d-b264-de5adf48d77d/72945887525.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/sabumevuvupez.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/god_of_war_2018_game_guide.pdfIn PDF document text
    • https://3e1af3dc-cf37-4f58-935d-0a6065bc5ce9.filesusr.com/ugd/3ca236_c8b4dbbe558d4ded89a0d025b4a03baf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c3ff444-038a-4f85-903e-0aa72d321a01/1939781682.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_off0000f073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF073 4704 bytes
SHA-256: 6a75e088ddb56b276221b4d8454b43d6279e38df73e20e45e39c1adf67f3b823
font_01_sfnt_off0001005a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005A 10492 bytes
SHA-256: d86e339a2551cb60175e1221a7e856bb150dda8148562b9552c8270dad5f7089