Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0d77a8c3315d9e…

MALICIOUS

PDF

91.5 KB Created: 2021-03-31 04:18:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3091f74389b55a964ca3766d0a2ef352 SHA-1: 6fc9ce57eb7564099c433cb7572d20e56f09e6f2 SHA-256: 8b0d77a8c3315d9e23c9878f67ca873fc2b354ceb5292d006666e5fd2692bacd
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were extracted, the presence of numerous links suggests an attempt to lure the user to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • 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.
  • 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://dafemum.ru/strik?utm_term=libro+el+secreto+ley+de+la+atraccion In PDF document text
    • http://bebobez.22web.org/xbox_one_controller_keeps_disconnecting_pc_reddit.pdfIn PDF document text
    • https://cdn.sqhk.co/jevikepuja/Zxoec1t/80180367965.pdfIn PDF document text
    • http://dabatimogumerek.iblogger.org/cuanto_equivale_1_8_de_pulgada.pdfIn PDF document text
    • https://cdn.sqhk.co/rasetiwulipu/OsVhaia/bumper_cars_on_ice_nyc_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CtjdgtM/fast_money_halftime_report_cnbc_fix.pdfIn PDF document text
    • http://berefiruzo.mygamesonline.org/truyn_andersen.pdfIn PDF document text
    • http://povulofi.mywebcommunity.org/povijiked.pdfIn PDF document text
    • http://koponegigat.medianewsonline.com/5e_critical_hit_poison.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gabifuzof.rf.gd/12456698318.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1511167-38d8-44a1-bc3c-a965e6624647/how_to_get_netflix_on_wd_tv_media_player.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8222df74-2d3f-4cea-a419-acf4ad59ba97/123_magic_parenting_course_cheshire_east.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38a60f38-4f90-4152-8eaa-fbec12cc031c/easy_way_to_learn_korean_language_for_free.pdfIn PDF document text
    • http://medexode.atwebpages.com/2016_amc_12b_answers.pdfIn PDF document text
    • http://kogiwosewa.rf.gd/social_identity_theory_psychology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89bea2f8-6bfc-41b6-bdaa-2194ee51c8ef/brother_hl-6180dw_printer_driver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/100f46a2-96d1-4978-8232-c301abd0c2ac/99301627753.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d893f8f5-ad66-467d-b7dc-765c8defa3e6/18313742040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d15ca9f7-ca37-4e18-a068-af6231a69103/what_foods_to_eat_when_cleansing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/019924d1-c395-451a-9adb-df467c5bd9ee/what_happened_to_beat_the_chasers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efdf70a5-f43b-4701-83db-58e06009bd02/cowon_plenue_d.pdfIn PDF document text
    • http://zirafefovijab.epizy.com/ancient_magic_book_osrs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7d87a84-0c7d-4b79-b03b-3983a2d8f3aa/what_are_the_symptoms_of_high_anion_gap_metabolic_acidosis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56439b87-68af-4e18-af82-61e33797cd39/66594401184.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010db8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB8 5116 bytes
SHA-256: 6f9e640c1dee03f455a2ceb66dc1cbfd9dbbb5ea42e9b5140d994f2d1d963db1
font_01_sfnt_off00011f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F34 13244 bytes
SHA-256: 21baebb3b14560b78a6274222cc7b5ed62fc8b40b8f63fa0417f337a1bd861b2
font_02_sfnt_off00014962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14962 16076 bytes
SHA-256: 12198ed304d8e74df64bcaa8a4aae6da6436d73ceeb6d758e01031f89a18fcfe