Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f929a02dba6b379…

MALICIOUS

PDF

77.8 KB Created: 2021-02-14 20:06:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: c41882ab890a71cc4d416a8fe776c3b2 SHA-1: 3af132222ba1385db782dc6690ad6be0a8c394ec SHA-256: 9f929a02dba6b37913270d17a5cce4f6c66653856c7764073e192641a88a2385
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL likely serves as the initial lure to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/wix?keyword=king+of+avalon+hack+apk+2020 In PDF document text
    • https://cdn.sqhk.co/mibajufaneja/W1hP1No/woranewigavinilizusotim.pdfIn PDF document text
    • https://cdn.sqhk.co/wowobavukelo/cjaQiXL/big_helmet_heroes_ios.pdfIn PDF document text
    • http://cadenalia.com/97163722515alea9.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/jggejdj/run_race_3d_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/FhjRheN/sure_shot_pest_control_greenville_michigan.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/g0ijjZK/76764091207.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/bgcjij7/96085703992.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/tobaziw/selojofodifiporasabitat.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/chickie_and_pete_s_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/formal_region_geography_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/championship_manager_03_04.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/cadena_de_suministro_verde.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/45699964954.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/beretta_px4_storm_compact_carry_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/41034025591.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/gikegazadixuwewigulawude.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/holy_quran_with_urdu_translation.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_off0000e74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74C 4960 bytes
SHA-256: e5d01b969043d1ff46629718b8fb0e8ee331916ff9652ee76f21f5e283c2efdb
font_01_sfnt_off0000f81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81E 10444 bytes
SHA-256: bfcc3507376ee747313984363b3c5abc3e2a98cd9bd43837dacb74a465918f35
font_02_sfnt_off00011bed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BED 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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