Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f50b4198f744ba0…

MALICIOUS

PDF

74.9 KB Created: 2021-06-05 20:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 13d8a188afc5b6ca7807c2f76a48c763 SHA-1: 56dba6118f4d773664ebe17ad4bd1f5444cfcf21 SHA-256: 9f50b4198f744ba03a0008594a16bf879cc8cb64ea07a756ba5fcff074928b6a
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 0.9997

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://pixomot.ru/pbw?utm_term=download+god+of+war+chains+of+olympus+psp+iso+highly+compressed+85mb PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4a11cde-be42-4d48-bab8-35682850988f/why_is_my_frigidaire_dehumidifier_not_collecting_water.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/024a8bb4-addc-4d45-9a7c-578cbd464dfa/icivics_anatomy_of_the_constitution_worksheet_p.2_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b217e39e-e9cb-4fc4-ba04-d370db22603a/top_paw_double_door_wire_dog_crate_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39e183a5-8e64-4569-a4e1-6699b1789dca/who_is_roberto_nevilis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6725e49f-ff5a-4b64-b5cc-ba193189d62a/82759037674.pdfIn PDF document text
    • http://gisugakeg.pbworks.com/w/file/fetch/144652314/project_closure_letter_template.pdfIn PDF document text
    • http://pimepovume.pbworks.com/w/file/fetch/144480222/gb_whatsapp_delta_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/012bb411-d453-4e87-87be-29cfc7f6bbcf/troy_bilt_tb240_instructions.pdfIn PDF document text
    • http://sejuworepow.pbworks.com/f/vuwonazon.pdfIn PDF document text
    • http://sinorodolu.pbworks.com/w/file/fetch/144654201/pathfinder_kingmaker_ferrera_prison_loot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10ef67ea-d601-4bd2-bb12-5551be327c32/fatupifo.pdfIn PDF document text
    • http://jedilukiwo.pbworks.com/w/file/fetch/144656142/cual_es_la_diferencia_entre_promocion_y_prevencion_de_la_salud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb79d272-5479-47eb-824b-7b50d0373af6/jonaviv.pdfIn PDF document text
    • http://kolasotosexu.pbworks.com/w/file/fetch/144424461/bhakti_gana_dj_remix_song_video_2018.pdfIn PDF document text
    • http://funinupun.pbworks.com/f/40883153624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55b7b1b7-89fd-4f32-ac0b-663efe48b996/30255913894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80e78068-7882-437e-a117-e36fa81e7d4e/12031770818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbec95df-b059-47b4-a021-9a1c90005b4b/83963215259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2e57a96-8a46-4cff-be2e-459891d7718e/software_flow_diagram_visio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cd4f17c-05c3-41ba-8bc3-dcc4b291fd9b/49130682128.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_off0000e34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34B 6220 bytes
SHA-256: 7e97dbb5e0ae86e68c0c8bc0efeb57fa1e3de4b4f634a9c62ee1b101da8698ea
font_01_sfnt_off0000f86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86E 10996 bytes
SHA-256: cbf9d77f70cb6249b8ccc8fd32675ca671d20dd3bd77ff52e6c7abdd3ece129c

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