Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d73aa37209d43d…

MALICIOUS

PDF

102.3 KB Created: 2021-03-23 19:06:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34f72dbee2ef5a6117b067f11eaf12e5 SHA-1: 702b8394793519d5cf16470000ff303a1657ad56 SHA-256: 02d73aa37209d43dfe5645fe376755da4acd4fabdb5c20be0bc80c2149c3dc53
156 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 contains a large number of external links, with one prominent URL pointing to a suspicious domain, suggesting a link farm or phishing attempt. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=ban+v%25C4%2583n+ngh%25E1%25BB%2587+vtv
    • https://zajinepimasi.weebly.com/uploads/1/3/2/8/132815118/getatifejereran_sijujanuvetop_fenazadonotog.pdf
    • https://fuvapevamasazu.weebly.com/uploads/1/3/4/5/134507747/c9c98d.pdf
    • https://pozuxona.weebly.com/uploads/1/3/1/3/131398461/gepexejofemekazenifu.pdf
    • https://cdn.sqhk.co/fotenulutis/ghffjfa/best_note_taking_styles.pdf
    • https://cdn.sqhk.co/menumuxod/iagfghr/sopefetunebomanokonuxe.pdf
    • https://fuwefepitebu.weebly.com/uploads/1/3/4/7/134709748/webasebavijuzudivuz.pdf
    • https://sexanugujox.weebly.com/uploads/1/3/4/2/134266496/lotopoxoti-wawometenixulo-delobakogilano-lelefewikoben.pdf
    • https://cdn.sqhk.co/sarafogu/cEjhihN/best_wood_carving_knife_set.pdf
    • https://zozufawagizawag.weebly.com/uploads/1/3/4/4/134454621/1914123.pdf
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/fulilujevefabo.pdf
    • https://cdn.sqhk.co/kamufegoke/Oo4Bgfr/ratio_to_percent_calculator_soup.pdf
    • https://mosodujisar.weebly.com/uploads/1/3/0/7/130739504/momakavu.pdf
    • https://guxemufisi.weebly.com/uploads/1/3/2/7/132710659/bijuv-wemipeperul-rezopudizutuna.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e2604e0b-f95a-4acb-b53f-a7db3827b2a1.filesusr.com/ugd/225520_b80eaf12adcc4134996e0ea1305be08c.pdf?index=true
    • http://xugobenive.epizy.com/hazard_perception_test_correct_answers.pdf
    • https://03f57db0-fbcf-46ec-8713-21b5992b8512.filesusr.com/ugd/455f95_6a78e7d222f64203bc5aee30f9a073df.pdf?index=true
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_d86f305239cf4d5fa25f6f1d6ea0d2e4.pdf?index=true
    • https://s3.amazonaws.com/faluzotixupi/soxejofatogujodepopipubiz.pdf
    • https://s3.amazonaws.com/fekife/kaluluvuwovukegojivufabek.pdf
    • https://s3.amazonaws.com/vapite/wabogajaturugoxevul.pdf
    • https://s3.amazonaws.com/vuterijoze/75158104282.pdf
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_ee69c793d4cf477987c9f6ca41b2dc37.pdf?index=true
    • http://nitasoginit.rf.gd/divinity_2_ego_draconis_class_guide.pdf
    • https://s3.amazonaws.com/xarojapi/96819953449.pdf
    • http://widuxetikos.epizy.com/employee_attendance_software_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000141f2.bin
a9dc3835d6eab19dbbec825fea3980878f9f0d16a2952aee0062bf393bef29f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x141F2 5184 bytes
font_01_sfnt_off000152d3.bin
6b7e956747fade0c37fd884f6fd7048b4a69a909a41f0471f82b541c9cb039fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152D3 26296 bytes

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