Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f9ee396ff14a7e3…

MALICIOUS

PDF

71.2 KB Created: 2021-03-20 17:43:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bfdf62c7c4d116c58c86fa15f910ee9b SHA-1: 5d1f2a639d97150cbd59da38a484bcf280d79e6d SHA-256: 0f9ee396ff14a7e3a12acf486a284a2d8685701ceaa62033a964fe56a553ffc1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jumiwimov.ru/wix?keyword=kumon+answers+level+g+english PDF link annotation
    • https://cdn.sqhk.co/xonarewu/gdPjdja/uefa_champions_league_ballon_d_or_2019.pdfIn PDF document text
    • http://ralugugifoxatir.scienceontheweb.net/bebebuvogafarajob.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/fqWpsr1/zombie_monster_hunting_simulator_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/morureju/jggiihd/how_to_grow_your_business_credit_score.pdfIn PDF document text
    • https://cdn.sqhk.co/pajiteka/iijCmmP/role_of_breather_in_transformer.pdfIn PDF document text
    • https://cdn.sqhk.co/fakujodi/TJie2Wc/95891952649.pdfIn PDF document text
    • http://warowusavi.mywebcommunity.org/wudojisobe.pdfIn PDF document text
    • https://cdn.sqhk.co/mifopanikil/9txjbid/94540689089.pdfIn PDF document text
    • https://cdn.sqhk.co/balapakufogo/ie5pNPs/ninja_run_adventure_mod_apk_unlimited_gems.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/xefezesebusu/how_to_get_rid_of_acne_bumps_on_back.pdfIn PDF document text
    • http://suduxegowur.onlinewebshop.net/fikawivitefoburibodawuwev.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/arikil_pathiye_malayalam_video_song_free.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/how_to_remove_adt_panel_from_wall.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/google_canary_64_bit.pdfIn PDF document text
    • http://benamow.myartsonline.com/tekulavomininoberome.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/6649243851.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/dj_baul_songs_._com.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/93058024479.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_off0000d9b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B0 5220 bytes
SHA-256: 495996160db65a79e137ecf210b1a33e86c41942c263e8ddfabf93d795e4a1c1
font_01_sfnt_off0000eb5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5F 10600 bytes
SHA-256: 178fa749a6bb8cff1aec9d6ca3d78bdc9ea73a3ce15e65586af437e67ded7f6c

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