PDF malware analysis — malicious · 5f0f16bad8799729

MALICIOUS

PDF

76.1 KB Created: 2021-03-23 05:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 309ae1449c5d16a32e5ff3211ec1dffa SHA-1: c5bdcf80b78f23d7796528d89c2f796385c947ae SHA-256: 5f0f16bad879972964bdd9c0ec2877416c90d9d85e940cae37b5e6851a153d80

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/award?keyword=inductive+study+bible+esv+pdf'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest a phishing or malware delivery attempt, likely using embedded JavaScript to facilitate the redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9960

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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://yafferge.ru/award?keyword=inductive+study+bible+esv+pdf In PDF document text
- https://cdn.sqhk.co/tamoravuwera/heBnhjR/arcade_games_emulator.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366020/normal_5fe0c7f6e471a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460970/normal_603e26208e45a.pdfIn PDF document text
- https://cdn.sqhk.co/tavaxikanabu/jalhdhi/halo_ice_cream_vanilla_bean.pdfIn PDF document text
- http://deladinabixek.sportsontheweb.net/jvc_everio_battery_not_charging.pdfIn PDF document text
- http://garanibukumom.scienceontheweb.net/sugajemubudajajezir.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4479715/normal_5fdf661f4586f.pdfIn PDF document text
- https://cdn.sqhk.co/fagisuxupinu/jbTMhdU/tuparerari.pdfIn PDF document text
- http://komaxinatobofe.medianewsonline.com/rewufovafubapikizav.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4476126/normal_60488fbe96354.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/moduxanakuri/crack_coreldraw_x5_kuyhaa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2e02dbd5-64b4-483c-9ab3-d2159a21c973/zibovenededuwadatu.pdfIn PDF document text
- https://320f262d-053d-461a-9009-498fa3b044f5.filesusr.com/ugd/8e680a_7e6f9ef696284a41986d8226b56c2b50.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/batoragubukepo/free_coreldraw_x5_bagas31.pdfIn PDF document text
- https://679cd94f-bb1f-411a-9684-d99498fe93d6.filesusr.com/ugd/ce16d4_c67ae38af80b41a68f1e72612ae5c382.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zonebon/butave.pdfIn PDF document text
- https://1e16f6d7-285b-4488-bf07-d3e24ac90e20.filesusr.com/ugd/417718_2ef62a3f9d7c4c2e9ced476a2611aded.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/pazerogasarinu/telugu_calendar_panchangam_2015_download.pdfIn PDF document text
- https://6d5fec37-5936-4ae8-8938-03a86e982f09.filesusr.com/ugd/d4da64_70b0f6f9de874a9ea8a2fa445095b4ee.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/c811e3ed-f5ac-4f07-976a-b38e26900782/lajezedof.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d1f9fe7a-0f38-4a1a-bb53-1a1d9231c1a9/lozopiguwepenajarito.pdfIn PDF document text
- http://geforagegi.atwebpages.com/how_do_i_reset_my_maytag_front_load_washer.pdfIn PDF document text
- https://s3.amazonaws.com/savifin/how_to_reprogram_a_clicker.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4d2199fd-45f6-44f0-a7aa-4f3cd53a6b48/why_isnt_my_ge_universal_remote_working.pdfIn PDF document text
- https://eae964be-cf9f-49a8-9b2f-00020d526acb.filesusr.com/ugd/e932cf_106f9f10fe464bb9bf4ba987eb401a03.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/46433405-ab65-4fa7-bd66-6ec6110e62b5/77715095851.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eb7d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB7D	5080 bytes
SHA-256: `8b1a0179fab045b2049afcb2280844e5ebb5e49beaf52f3d09b5216e7c5244d0`
`font_01_sfnt_off0000fce6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFCE6	11264 bytes
SHA-256: `fa85bc71fc0044a2ac191e2bedfc6c768b1125e4bac58cdcda3ccd269db7e052`

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