Malicious PDF — malware analysis report

Static analysis result for SHA-256 09bab5543ad43c41…

MALICIOUS

PDF

71.6 KB Created: 2021-04-28 23:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5697bc4568b819faaf6cc86bbeb6072c SHA-1: 9d29c05740150a3d24cf8f21ca198b6be75abe5e SHA-256: 09bab5543ad43c4189cb20cf8f4ef4b84cbbf351f850c961733fe5c2b77cc350
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://jottigo.ru/strik?utm_term=firehouse+subs+nutrition+values PDF link annotation
    • https://cdn.sqhk.co/dirotiweze/3alhiic/gpo_lock_screen_windows_10_registry.pdfIn PDF document text
    • http://rinujajija.getenjoyment.net/what_is_another_word_for_political_alliance.pdfIn PDF document text
    • http://lexamopelezun.mywebcommunity.org/practical_hemostasis_and_thrombosis_3rd_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/anGFyAs/off_road_rally_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/ggYhdgf/rovezegifirawefu.pdfIn PDF document text
    • https://cdn.sqhk.co/nizufalagef/ieicggg/checkers_free_food.pdfIn PDF document text
    • http://wosedumuf.mywebcommunity.org/swift_analysis_aptitude_sample_test.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0a38098d-26c8-4844-ab0b-2dfc398d7f8d.filesusr.com/ugd/fffd55_5a4bdb6238d44c79adaa83fa2751cf3f.pdf?index=trueIn PDF document text
    • https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_5e14a910496448ad96e0025178e46e18.pdf?index=trueIn PDF document text
    • http://figigibole.rf.gd/sp_balasubramaniam_songs_tamil.pdfIn PDF document text
    • https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_81a847e9113b43ffb838c1fe0b365b80.pdf?index=trueIn PDF document text
    • http://purezaviwof.myartsonline.com/jiguzex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2427aa6c-36ca-4c76-a893-0e4b52283ebe/23290434865.pdfIn PDF document text
    • https://3c3713de-992c-4571-92b4-00afcb8cb2c1.filesusr.com/ugd/9dbdb2_9f121a8fb10649e7bf6d50c228be2c56.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b98711f9-4266-4b1d-bff7-48062ee9e5e4/proscan_32_inch_tv_remote.pdfIn PDF document text
    • http://vufuditot.rf.gd/premiere_pro_2.0_mp4_plugin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55e1a7d3-3814-460c-808f-9045298347ef/80124865846.pdfIn PDF document text
    • https://203e7bc3-08d7-4ecc-a8df-f797e0d4a079.filesusr.com/ugd/d4579c_67b4e58134874394a0810b6a7103c8f0.pdf?index=trueIn PDF document text
    • http://jabodegodonirad.atwebpages.com/dry_adiabatic_lapse_rate.pdfIn PDF document text
    • http://wejelinemadagep.rf.gd/18765458410.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_off0000dcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC3 4928 bytes
SHA-256: 61689223b3c19582a4dcb3e3dc3f94ec3b70de1ae3b1bf7e9566a29e2f5a39da
font_01_sfnt_off0000ed84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED84 10404 bytes
SHA-256: 3cbf848c3dd854ddc493046f94e4490fc57c6e0e5254ba523693debf4293a751

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