Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fb7a92f4bbd804…

MALICIOUS

PDF

73.8 KB Created: 2021-03-19 13:48:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8209e9a81aec5ff78e6086a7c87ffe6 SHA-1: d103b07a7ded8b61e07721c59ef7ec2862a137d1 SHA-256: 46fb7a92f4bbd8045399b01aa332cdc7b0a5781bc0c1d7e38155b1e0f37298b6
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary URL pointing to a suspicious domain that appears to be part of a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/wix?keyword=eddie+bauer+quadtrek+travel+system+manual
    • https://gewujamagig.weebly.com/uploads/1/3/5/3/135339218/sibuwixe.pdf
    • https://gekubele.weebly.com/uploads/1/3/2/6/132683169/5516081.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kesewoge.rf.gd/19857828068.pdf
    • https://uploads.strikinglycdn.com/files/bc01cd7c-8a7b-497b-9379-936cb76cd6fe/mtd_yard_machine_12.5_hp_38_battery.pdf
    • https://uploads.strikinglycdn.com/files/b98a6e89-db91-4683-b777-f92553616633/how_to_deal_with_emotionally_needy_mother.pdf
    • http://minuvuri.epizy.com/potisiriwusu.pdf
    • https://uploads.strikinglycdn.com/files/d2d80675-fac2-48d2-8e26-aa9ee3f59de1/lozegesed.pdf
    • http://bejiteviv.epizy.com/erik_satie_gnossienne_no_3_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/e9955e12-9bbd-4d45-a867-1c1604f63664/stanley_model_number_bc15bs.pdf
    • https://uploads.strikinglycdn.com/files/8f482ba6-70fe-42e7-a13a-57ce95108591/97474185553.pdf
    • https://uploads.strikinglycdn.com/files/74f1224e-137e-475d-be95-f45ec13ad119/adobe_elements_2020_price.pdf
    • https://uploads.strikinglycdn.com/files/026cf1f0-874c-421a-a2d8-8ed9e7c7ac90/fogojatutiwegis.pdf
    • https://uploads.strikinglycdn.com/files/0282a7bf-a579-4bc4-bd8b-a4011a8b91d7/28762264765.pdf
    • https://uploads.strikinglycdn.com/files/9a51be56-975b-4858-a853-5efbddc5c3df/how_to_convert_mini_dv_tapes_to_mac.pdf
    • https://uploads.strikinglycdn.com/files/35b97b40-3ad9-4dc9-a05e-a86af2d19099/resumen_libro_2_juego_de_tronos.pdf
    • https://uploads.strikinglycdn.com/files/853a44ca-8f7e-4711-b82a-814fb27c4bed/paige_spiranac_golf_tips.pdf
    • https://uploads.strikinglycdn.com/files/14cc7d14-be3a-4719-8841-53497587df63/oreck_air_purifier_truman_cell_replacement.pdf
    • https://uploads.strikinglycdn.com/files/a0292f42-fd77-4a75-81d2-51f0601f75e3/71791174009.pdf
    • https://uploads.strikinglycdn.com/files/48e1f04e-652f-426e-b382-b313da643c70/surah_yaseen_in_english_full.pdf
    • http://tesitanine.rf.gd/electronic_devices_and_circuit_theory_robert_boylestad_free_download.pdf
    • https://uploads.strikinglycdn.com/files/c734c5d7-77c2-4ef0-92a4-00cd772057ed/vupabinojit.pdf
    • https://uploads.strikinglycdn.com/files/6af98276-f1d4-4e5e-b24a-b9f8010fe161/21162485638.pdf
    • http://medesawawolujim.epizy.com/vidmate_hd_er_movie.pdf
    • https://uploads.strikinglycdn.com/files/ba0b916e-1b58-4800-82f9-a11d02ce3c51/google_search_console_website_anmelden.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_off0000d65f.bin
099a271eb214a1bc3129a32daba1f5e8f02f51a639c657a7819ffde150d46e17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD65F 5420 bytes
font_01_sfnt_off0000e8c2.bin
aa7c321d3d6ad6c9ba1b37645dcbb7f413be4f0234d11614d5cbc0f21f58b95b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C2 15160 bytes

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