Malicious PDF — malware analysis report

Static analysis result for SHA-256 32bbe871b12ab20d…

MALICIOUS

PDF

71.3 KB Created: 2021-04-05 10:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cd8a148b02175d4ffe624c74fee37ccc SHA-1: 9d88abe24a5f0d43c83a3b0242bf2b5662e9a18b SHA-256: 32bbe871b12ab20d69a0cd4bbf24532d9f9e28facb3adddddc487190fabc33c2
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/123?utm_term=1mm+clear+thin+petg+plastic+sheet PDF link annotation
    • http://sowopezamiw.medianewsonline.com/artemis_fowl_opal_deception_graphic_novel.pdfIn PDF document text
    • https://cdn.sqhk.co/nawovoso/gfwCibZ/facebook_business_manager_tutorial_deutsch.pdfIn PDF document text
    • http://gedirobidepud.scienceontheweb.net/reduce_size_mac_os_x.pdfIn PDF document text
    • http://jifarobajis.sportsontheweb.net/basic_concepts_of_physics_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488315/normal_5fe73eba7de73.pdfIn PDF document text
    • https://cdn.sqhk.co/fujesepulo/Rifyzhg/75428157088.pdfIn PDF document text
    • http://mavogevuz.getenjoyment.net/43473605596.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://92923600-264c-4cb8-9d87-181083d4f0d6.filesusr.com/ugd/0bf43f_a89fa52b4d064eb6abc63e32b4b52a9b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bagisi/unconfirmed_report_means_in_ecg.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/msi_z87-g45_gaming_ethernet_drivers.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/ffxiv_blacksmith_power_leveling_guide.pdfIn PDF document text
    • https://e0d0d77b-4c00-4265-bc22-f0cc5cf11ada.filesusr.com/ugd/957eb4_2eb4337e32f24f6b8c2ef435b3b115f2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/685c90c8-77b6-40ac-a1bc-119865b65254/audio_del_caballero_de_la_armadura_oxidada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/555f3de7-f65e-480d-b5bc-71bf2a5fa3db/samsung_un65ju6700_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ef391a8-73ac-48ff-b396-1a4296130bcc/how_to_natural_hair_dye.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/436408b6-b734-483b-820b-92b567797974/husqvarna_chainsaw_455_rancher_chain_sharpening.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_off0000c9f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F3 4984 bytes
SHA-256: bcf4d14e0ee0b2a35fa4b97807eecf9b84e19d3eb7fe3973de66292961eb45d6
font_01_sfnt_off0000daad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAD 11576 bytes
SHA-256: 42e3abfd3185570bb7c7cc5db767fbdfd747dac6440d290018dd238d48911328
font_02_sfnt_off00010236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10236 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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