Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cccc16d6c048ebd…

MALICIOUS

PDF

73.0 KB Created: 2021-03-11 17:59:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: ac8146ed331dd442f4c95603df416034 SHA-1: 9ed39192b32ea75304341ad920988514075f4497 SHA-256: 7cccc16d6c048ebdde9e8ed7b5aea856257dd006734ed36a66ad123561be13b7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to 'baarspo.ru' and containing a product keyword, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=graco+travel+lite+crib+with+stages+assembly PDF link annotation
    • https://cdn.sqhk.co/foradimotiri/icgiFCb/bass_booster_pro_volume_amplified.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/VyYjigE/street_racing_hd_mod_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vefusujix/80gjVjf/orcs_x_idle_clicker_rpg.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/zudebonizupo.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/hacHif6/fb_liker_app_download_apkpure.pdfIn PDF document text
    • http://rasazevedip.22web.org/70730299396.pdfIn PDF document text
    • https://xuwupeloz.weebly.com/uploads/1/3/4/7/134734270/1706855.pdfIn PDF document text
    • https://sulezesolujoseg.weebly.com/uploads/1/3/1/4/131452841/6270191.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/bodybuilding_workout_with_pictures.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ef4b221f-cfb4-47e8-bf1d-3b5092770df7.filesusr.com/ugd/4948da_d56114f44cdc4e0fbdf1887ea0e590f7.pdf?index=trueIn PDF document text
    • https://e42ce0b3-f376-4cb5-9abe-507fdbb9570c.filesusr.com/ugd/603474_0f8b39b93e2f450cadbbdb68afd027f8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bf7a76c-4bd0-49aa-b103-c7fb8fd71d3f/how_to_write_excel_formula_for_percentage_decrease.pdfIn PDF document text
    • http://sejofedavija.epizy.com/focus_group_discussion_guidelines.pdfIn PDF document text
    • http://pupagerirawax.myartsonline.com/ethical_hacking_salary_per_month.pdfIn PDF document text
    • http://mefomoximene.rf.gd/sapafimowisupepu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdfa9452-3779-4a8f-820c-8deb7b7598f3/tekilevivow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71a3e9d7-4251-4339-9185-3624f02b81a6/dawn_saves_wildlife_commercial.pdfIn PDF document text
    • https://87da31d5-d184-45e7-a456-0ad082c8bd65.filesusr.com/ugd/55e94a_38387f9ef3944964ab59b0d31d4060a7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e781f16c-9c34-46b2-bd88-b28ecc9da7c0/my_cloud_macos_app.pdfIn PDF document text
    • http://jajabidabewaw.rf.gd/23400226110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3c989d2-4b5a-46b7-a6d9-0f6bbdfc5b27/99017592255.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_off0000e07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07E 5640 bytes
SHA-256: 6ad38715107496858e014471675542f6b76bd2b71b0a0950e594109045fb5cc0
font_01_sfnt_off0000f39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39E 10184 bytes
SHA-256: 672a2b9d1785e06c0e5469baed491ac2f3715773c9e83d7f85ff39aab0be443f

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