Malicious PDF — malware analysis report

Static analysis result for SHA-256 43aa7b71f718a6ef…

MALICIOUS

PDF

74.8 KB Created: 2021-03-25 07:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e0f938ea6464694a6f291e22ea4e011 SHA-1: a62f86f211203708d195cf6e45fe4853467479ca SHA-256: 43aa7b71f718a6ef2b2ad446c5158ee2c0dafa58d9b4b10735fbce15711a01c8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query for 'ikea poang chair cover washing instructions', likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The presence of embedded URLs and the overall structure suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://xezojetit.ru/wix?keyword=ikea+poang+chair+cover+washing+instructions
    • http://kzrovk.xyz/pubekatexopegxkanh.pdf
    • https://cdn.sqhk.co/bawijodol/bhiibhc/52171030443.pdf
    • http://sarelalitodidi.66ghz.com/what_is_the_median_household_income_in_florida.pdf
    • https://cdn.sqhk.co/puranajav/e2Qjbhi/titibululiwufam.pdf
    • http://b0xberry.online/fubetux80v7.pdf
    • https://cdn.sqhk.co/bamazaludez/qha68je/first_grade_math_games_abcya.pdf
    • https://cdn.sqhk.co/raserijene/QggFCje/blue_on_black_live_five_finger_death_punch.pdf
    • http://nobelopagix.22web.org/27646604141.pdf
    • https://cdn.sqhk.co/taxuvoguraji/JjhFgeT/strategyzer_value_proposition_canvas_explained.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xuxusemo.epizy.com/oboe_duets_free_sheet_music.pdf
    • https://s3.amazonaws.com/xupizewuxere/camera_semi_profissional_fujifilm_finepix_s1000fd.pdf
    • https://s3.amazonaws.com/suxiweke/oldham_hulme_grammar_school_ofsted_report.pdf
    • http://javidukasomeg.epizy.com/nedadowudepusuwezirilarub.pdf
    • https://s3.amazonaws.com/kotodur/fios_one_remote_wont_pair.pdf
    • https://s3.amazonaws.com/zoluwivebiro/titus_andronicus_movie_lavinia.pdf
    • http://ruxomipeb.epizy.com/year_6_long_division_worksheets.pdf
    • http://ginarokexaf.epizy.com/kaditesudiwuju.pdf
    • https://s3.amazonaws.com/vokeri/tiwevuxonimabes.pdf
    • http://baxaroju.epizy.com/feduvivokaluvodejipi.pdf
    • http://givemuzod.epizy.com/25142601655.pdf
    • https://s3.amazonaws.com/widofafane/43186873831.pdf
    • https://s3.amazonaws.com/xabalaru/fikoviwerorisovuvaj.pdf
    • http://fapadosijavo.epizy.com/92645665019.pdf
    • 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_off0000e535.bin
a81691792d50401df6b3c8a8723bc3fb5ea3279b272961969c330d7270b4d55d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE535 5316 bytes
font_01_sfnt_off0000f764.bin
68664407bc1f5291a0e6500b8c0df1443ab1ec3199a1b03f0a006493b01aebe8
pdf-font-stream PDF embedded font (sfnt) at offset 0xF764 11228 bytes