Malicious PDF — malware analysis report

Static analysis result for SHA-256 03799cd362d41517…

MALICIOUS

PDF

70.7 KB Created: 2021-02-21 03:50:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e3711bfc587e78b539ef3e23f69d4d8 SHA-1: e4e2cd2ac0a99cc8e9570117634f49d60753b47b SHA-256: 03799cd362d41517d530fca83e561d3bc50be948ce20c64bddb47af3c955c3a6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a page with keywords related to assessment answers, suggesting a phishing or scam lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing attack, likely attempting to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/wix?keyword=17.1+genes+and+variation+assessment+answers
    • https://cdn-cms.f-static.net/uploads/4410730/normal_6022e40e721f2.pdf
    • http://golden-bridge.pro/how_do_you_write_a_descriptive_narrative_essay_with_dialogueiyh6w.pdf
    • http://fridgeservice.ru/bowikepegig103bh.pdf
    • https://cdn.sqhk.co/gukugifixija/dk7XjhB/99143425926.pdf
    • http://mmeueue.space/jorge_pamplona_roger_wikipediaq84ct.pdf
    • https://cdn.sqhk.co/xexerekija/ijaiaLH/92373420130.pdf
    • http://1xbet-registrat.site/is_greek_gods_yogurt_healthyc1u1r.pdf
    • https://cdn.sqhk.co/puberufibo/jejj3DG/hockey_wallpapers_cool.pdf
    • http://jewlgems.com/monster_truck_mega_ramp_stunts_extreme_stunt_games3gvlm.pdf
    • https://cdn.sqhk.co/netimawifes/eYifdBD/monster_truck_movie_free_download_in_tamil.pdf
    • http://meine-gebuhrenfrei.com/free_spaceenginge_downloadltk8r.pdf
    • https://cdn.sqhk.co/gawagunikuw/tnLhfhi/world_map_switzerland_europe.pdf
    • http://item-get.top/tepogelokumojeifez3.pdf
    • https://cdn-cms.f-static.net/uploads/4418001/normal_5fe9e57dd8d6a.pdf
    • https://cdn.sqhk.co/nivipanevi/Vifljei/im_slowly_learning_spanish_in_spanish.pdf
    • https://cdn.sqhk.co/vekuzajomugi/gggfkF2/nhl_news_2020.pdf
    • http://prolac.ru/cgegis_table_2020nh7tz.pdf
    • http://natlegend.space/588029576093oyg6.pdf
    • https://static.s123-cdn-static.com/uploads/4393208/normal_5fed1bdfc41da.pdf
    • http://pumba-timon.space/latest_hd_bollywood_movies_2018bfhrt.pdf
    • https://cdn.sqhk.co/letonolomo/hiTiLVv/stick_nodes_free_download_pc.pdf
    • http://dkblogin-de.com/94123289529xefmm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d80e.bin
534e3e5ca8cc918b4ccaefb4a43ebad1fae73f83cb0722d8f2bbe5f4371bd42a
pdf-font-stream PDF embedded font (sfnt) at offset 0xD80E 5336 bytes
font_01_sfnt_off0000ea41.bin
5e5cf0da1b11e71c10798f61fe43a7184f0bbdf99121dcf2101ffe378cbfff23
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA41 10360 bytes