Malicious PDF — malware analysis report

Static analysis result for SHA-256 a184153ffb09d8b9…

MALICIOUS

PDF

75.5 KB Created: 2021-03-02 08:56:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 46420c8d18f2093d2bea24a2314fcbcb SHA-1: 9e519408557a3a4bd4fb8a79c4652092f3c689b4 SHA-256: a184153ffb09d8b9f438290146c880ee621bf9d6eded57858439459d72b68121
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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://botokaw.ru/strik?utm_term=sc400+w58+swap+kit PDF link annotation
    • https://cdn.sqhk.co/gogoturowib/Ihfy67v/guilty_conscience_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/papusabefo/b3hayno/9349168381.pdfIn PDF document text
    • https://cdn.sqhk.co/digatamale/kiihcif/legend_of_the_phoenix_drama_wikipedia.pdfIn PDF document text
    • http://nufudotaruja.iblogger.org/adam_joan_film_video_song_free.pdfIn PDF document text
    • https://cdn.sqhk.co/sarunasol/CuZgjhj/ziwidetatipijikajopu.pdfIn PDF document text
    • http://gikisivota.iblogger.org/7813609396.pdfIn PDF document text
    • http://bobiruropiles.22web.org/cv_format_for_sales_executive_word.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377912/normal_5fcfad0d79f2a.pdfIn PDF document text
    • https://cdn.sqhk.co/votiwixuduzo/AIji2hj/t_mobile_content_transfer_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fuxuduxexi/d6b1wjT/planet_waves_sos_strobe_pick_tuner.pdfIn PDF document text
    • https://cdn.sqhk.co/tewokozogop/iMKIgdK/3155383350.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/jxhiNkV/mizawor.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/JjjhEjf/download_gun_master_2_hack_apk.pdfIn PDF document text
    • http://tularafujebok.iblogger.org/pharmacotherapy_dipiro_book.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wupeguliv.epizy.com/tepamuvulel.pdfIn PDF document text
    • http://zezexef.epizy.com/armenian_keyboard_for_iphone.pdfIn PDF document text
    • http://xofenilar.epizy.com/how_to_build_balance_sheet_from_income_statement.pdfIn PDF document text
    • http://mujunuge.rf.gd/gotawobonog.pdfIn PDF document text
    • http://vonizupereru.rf.gd/tujezebubixujupotufex.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_off0000e8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EE 5608 bytes
SHA-256: 563613c156c26f8608a9bcb645bb4f827a5be827d2395c0bf1a98f5582cb77d9
font_01_sfnt_off0000fc3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3D 11220 bytes
SHA-256: 0dc987ba46ee11cf636e3606b46d8651f46b2f1c46ff98567581c92ebc1043b8

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