Malicious PDF — malware analysis report

Static analysis result for SHA-256 601661216ba732e0…

MALICIOUS

PDF

70.4 KB Created: 2021-04-06 01:00:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 708ed2eded6b85005ca195f468b758c0 SHA-1: df4c86ea7c54bfd1fa2f748befdee6b268689ead SHA-256: 601661216ba732e009dafa36163eea03129aa736a36c1aedb7080a61e54b3f94
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to external sites, one of which is flagged for potential phishing. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports the malicious nature by identifying it as a link farm on disposable hosting. No scripts were extracted, but the overall structure and URL analysis suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=2003+kawasaki+bayou+250+carburetor+adjustment PDF link annotation
    • https://cdn.sqhk.co/nejajevafode/gdCCZeC/virus_scanner_for_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/buzovegom/dibidlK/85096303129.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxovunevo/c4heLgi/gaduxuf.pdfIn PDF document text
    • http://legendarycraft.ru/by_the_waters_of_babylon_plot_summary70b3k.pdfIn PDF document text
    • http://zesenadozefut.sportsontheweb.net/cannery_row_by_john_steinbeck.pdfIn PDF document text
    • http://honbiz.pro/vesewasiradirunm11nq.pdfIn PDF document text
    • http://wanididezaj.getenjoyment.net/70289325394.pdfIn PDF document text
    • http://topcreditcheck.info/638352443134alts.pdfIn PDF document text
    • http://dazipuv.iblogger.org/xizofig.pdfIn PDF document text
    • http://4338bacchus.com/snes_usb_controller_driver_windows_10v8po4.pdfIn PDF document text
    • https://cdn.sqhk.co/lasijutag/ihyjija/vomerine_teeth_location.pdfIn PDF document text
    • http://lasabobobatir.22web.org/blackberry_mobile_tones.pdfIn PDF document text
    • https://cdn.sqhk.co/fovipobex/Jhj7WNR/rotozum.pdfIn PDF document text
    • http://busurman.space/wordscapes_level_2502_answersumo62.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kifavudufolafu.epizy.com/gevulemasitejinidi.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/duxufupixedonawexopiverix.pdfIn PDF document text
    • http://mijitililifi.epizy.com/68538271822.pdfIn PDF document text
    • http://xadilopavut.myartsonline.com/29989091337.pdfIn PDF document text
    • http://wuredavamawot.rf.gd/wuroxugutetirikowa.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/new_holland_451_sickle_mower_adjustment.pdfIn PDF document text
    • http://tofujuwo.onlinewebshop.net/adele_someone_like_you_lyrics.pdfIn PDF document text
    • http://gelutusuxipedib.rf.gd/wegimefutazovow.pdfIn PDF document text
    • http://dorenibe.rf.gd/embodiment_design.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD183 5996 bytes
SHA-256: ef8f1e2e604355e73daee384c549872c23592482c3d43ca32d77720927778699
font_01_sfnt_off0000e5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F2 10492 bytes
SHA-256: b86ba22e750c755f282a7c77c21d60f8f3dd8758be360eccd6fe5f7bc6fc866a

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