Malicious PDF — malware analysis report

Static analysis result for SHA-256 53e7380f9706da4f…

MALICIOUS

PDF

83.9 KB Created: 2021-04-03 19:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 41c9ad7a7e767e299a2908bf40824aaa SHA-1: 58713171bd6ed5f36f40af7bea06476e9f3d21b6 SHA-256: 53e7380f9706da4f4dc67bc2eb8a543a4309343c5e383c131ecddd0d1b39dc3b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://dugedepap.ru/strik?utm_term=adobe+photoshop+cs6+classroom+in+a+book+free+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472788/normal_5fe9706adb1b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_60377575d2184.pdfIn PDF document text
    • http://kuzikugipitimiz.iblogger.org/xedoxix.pdfIn PDF document text
    • http://pusatokolerax.mywebcommunity.org/babajonorowixi.pdfIn PDF document text
    • https://kevelowomovozi.weebly.com/uploads/1/3/4/0/134012304/sorivasiwumex_belimemaw_vatexi.pdfIn PDF document text
    • http://ranupila.mywebcommunity.org/autoimmune_haemolytic_anemia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387240/normal_605f71e9809ce.pdfIn PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/breville_ice_cream_maker_dial_not_working.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493209/normal_60149f2f6feae.pdfIn PDF document text
    • https://weginufakitin.weebly.com/uploads/1/3/4/8/134846544/3975470.pdfIn PDF document text
    • http://numulul.mygamesonline.org/skyrim_xbox_one_mod_load_order_list.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/baxegezivumi/aston_martin_dbx_for_sale_second_hand.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/free_anime_beelzebub_sub_indo.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/sisubo.pdfIn PDF document text
    • http://xixusavexu.rf.gd/little_house_on_the_prairie_season_5_episode_6_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/how_to_install_whirlpool_cabrio_washer.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/tovikedivosatimokivasaji.pdfIn PDF document text
    • http://nitubak.atwebpages.com/great_god_victory_worship_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/wordly_wise_3000_grade_5_lesson_5.pdfIn PDF document text
    • http://texatutegelemov.rf.gd/pefazelojugotugaz.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/19197341696.pdfIn PDF document text
    • http://webetiruziri.rf.gd/91465678388.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/warodetotudipozufoma.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/nature_s_answer_ashwagandha_australia.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7E 5528 bytes
SHA-256: 5d93da46af5a6e5b3de812c28d1790921261a87a668a22b2fe5edeab63f945e3
font_01_sfnt_off00010f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F16 10656 bytes
SHA-256: 73179f28e79e57d1e520975edd9184a439783d9e93da7fadfac67408c2a70954
font_02_sfnt_off0001338f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1338F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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