Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f58b3f8489af240…

MALICIOUS

PDF

76.9 KB Created: 2021-04-05 13:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f719c9d512f3d2616179bc1f042bd406 SHA-1: a575c9a42c11cabad92c7373b6dcec72a088d416 SHA-256: 9f58b3f8489af240ac23fd08473704578c65b3842392b20526ae014a30aeadf1
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains that appear to be part of a link farm or SEO spam operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs suggest an attempt to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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://fokemale.ru/award?keyword=las+calles+de+m%25C3%25A9xico+leyendas+y+sucedidos+pdf PDF link annotation
    • http://jekefidaz.mygamesonline.org/jeparobokazubo.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/kxWjfjk/qs_world_university_rankings_2020_aerospace_engineering.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/ghaheRf/mp4_filmy._com_bollywood_movies.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/nowenet.pdfIn PDF document text
    • http://vojemodipu.sportsontheweb.net/65292278746.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/jfbniii/descargar_age_of_conquest_iv_mod_apk.pdfIn PDF document text
    • http://vedivux.mygamesonline.org/lyrical_ballads.pdfIn PDF document text
    • http://terakusinuw.mypressonline.com/9248599677.pdfIn PDF document text
    • https://cdn.sqhk.co/bebomopakax/al6o33B/army_followership_and_servant_leadership.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/tigovatolis/how_many_calories_are_in_a_taco_salad_with_chicken.pdfIn PDF document text
    • https://ff4d9611-e7ea-45f2-85d3-f0b464ef817f.filesusr.com/ugd/48f461_61ec786db28b473ab295ece449802ae6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/how_to_reset_usps_scanner.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/xomevisefojul.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/gajivupebatuwonew.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/76614025698.pdfIn PDF document text
    • https://3eeb541e-75be-486c-a732-b1e279b2a932.filesusr.com/ugd/eaab1c_653acbdeb85c471f99b3568c256ae26f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dezajok/reading_comprehension_questions_and_answers_ibps_clerk.pdfIn PDF document text
    • http://ratobewiwigu.atwebpages.com/72553011074.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/57773722245.pdfIn PDF document text
    • http://tifilow.onlinewebshop.net/wenadatame.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/huckleberry_finn_audiobook_chapter_38.pdfIn PDF document text
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_6e7e3a1ee5354c11b68928c565d3bbc1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/jarofomonomojunetuzino.pdfIn PDF document text
    • https://0633afab-057d-4448-85e1-ac1a97571725.filesusr.com/ugd/66920c_92fa9cdd218542a6ae9867a64baf9e45.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tawovojo/kutafemuzetedutoke.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_off0000e86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86C 5456 bytes
SHA-256: 3cdbffc7df716d6fda91315742660c19ae4841186d132f405b1b30a3e831dc43
font_01_sfnt_off0000fabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABB 12744 bytes
SHA-256: d909d6ced90c1ed230d58150fd8ae4e80a10902e2b9e3feb9f8003266c5066ec

Open this report in the interactive analyzer, or submit your own file for analysis.