Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cfc0d7665f3bb36…

MALICIOUS

PDF

71.4 KB Created: 2021-03-08 11:30:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7bc68005c85209f9cf9a622258aa8210 SHA-1: 5a96d2f3020aa1acc84644702d3e43530135809b SHA-256: 7cfc0d7665f3bb36dce5bc6533fdeb3fdd8c72cc109f4ae5906450fad3afa621
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://ponafet.ru/wix?keyword=words+beginning+with+squ PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371014/normal_5fe2cbb73ca20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384164/normal_5feed749d403d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385862/normal_5ff384d38ab25.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/jacje5I/80089904181.pdfIn PDF document text
    • https://cdn.sqhk.co/ranotigu/YbrhcWQ/99158800425.pdfIn PDF document text
    • http://jozebemi.iblogger.org/multivariate_statistic_regression.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/93448c7f-a722-441e-9052-2beccbcd81f2/wuxiwisudekobewigojejevu.pdfIn PDF document text
    • https://b6f97e74-198a-461d-a312-d71b9712332b.filesusr.com/ugd/a2d007_ee65cd9bc566423888e0a6c8c4b41ab1.pdf?index=trueIn PDF document text
    • http://xoxiposewarewa.epizy.com/torazopezoxumurunipemel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab73fdfa-7208-4333-ad99-812bfba565d2/the_secret_life_of_the_american_teenager_season_1_episode_2_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c037d5f-d245-470c-8465-2c67618d647d/37215491056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32a5dd22-0c17-4ab0-909c-ca357d1d8e5a/gorup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47863937-a24f-4dc2-b226-d9347623c18c/garmin_gpsmap_62stc.pdfIn PDF document text
    • https://59cf682b-6680-4a08-8b8d-0472bab64ef7.filesusr.com/ugd/d7d6cd_47300eeb263c4f0a9e08826b2f342739.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dbd8545-be4a-4128-9cdc-ff91917dd89b/adivina_los_sonidos_de_animales_juego_para_nios.pdfIn PDF document text
    • https://58c039e8-67b9-440d-b216-5500198d4781.filesusr.com/ugd/c4dbd3_5fcc3680017243369e983736325c4f21.pdf?index=trueIn PDF document text
    • https://a9da0397-8586-4464-b41e-1153078571f7.filesusr.com/ugd/2e16aa_12ce7a1fad7f4cf3a25fca1b0af79c74.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/05806bbb-2c2e-4d0b-a4a1-fd8128231785/how_to_find_grams_from_moles_in_a_compound.pdfIn PDF document text
    • https://33da92c3-26de-4f6b-bf12-1693cb6a6e79.filesusr.com/ugd/0307f2_d495a63acac045a08862888bb05d92c6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e435d2a0-ef0c-41f1-ab19-7df2a46c4b95/advanced_mechanics_of_materials_and_applied_elasticity_5th_edition_solution.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF4 5096 bytes
SHA-256: 431db9ad8123036a88903c7f1bab013a95b64b8e18b96e31ffa6dd22bfc64a25
font_01_sfnt_off0000de58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE58 10624 bytes
SHA-256: 937efa0c6c4dce146f00d5bb4a55376ff5ba480f22d10adb34f0597a937d0d45
font_02_sfnt_off00010287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10287 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71