Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d66a3464cf3d76d…

MALICIOUS

PDF

69.5 KB Created: 2021-03-23 11:03:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 770d6ceece8a01fece77b8f4446b7620 SHA-1: e1664ccb3ce8c6605bfc108eb4232d90999c8cf2 SHA-256: 7d66a3464cf3d76d2b76b559699a9dd601648101b605c3913f6e7fed070db827
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 0.9996

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://resalured.ru/wix?keyword=college+physics+7th+edition+solutions+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/remimidotomi/eicjaic/revuvukenofarafu.pdfIn PDF document text
    • http://gimatadokij.mygamesonline.org/bluedio_t_elf_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/labifikup/jg8ieig/lebara_australia_app_ios.pdfIn PDF document text
    • http://rowajenuw.iblogger.org/casio_g-shock_dw9052v-1cr.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/gd1z6Wq/uvc_light_meter_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/fabokofe/qYeiidW/toilet_water_runs_all_the_time.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/djbTMIc/game_of_thrones_cast_season_3_episode_8.pdfIn PDF document text
    • https://cdn.sqhk.co/lokuwanij/0Fk7ggm/16463383160.pdfIn PDF document text
    • https://cdn.sqhk.co/gapobuzijiru/jeghhf6/brake_caliper_guide_pin_sleeve.pdfIn PDF document text
    • http://xovijezup.mywebcommunity.org/prophetic_intercession_music_youtube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/44b82a06-1437-40ca-848d-82bad6efc446/14281513408.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfc8454b-2b52-42bc-a104-73a341013642/fuvuxazinuzurawekusufe.pdfIn PDF document text
    • http://jozafijudibedak.epizy.com/togamuzovevubufuzusozulod.pdfIn PDF document text
    • http://pesipobigon.rf.gd/bafepiduvuta.pdfIn PDF document text
    • http://pojajabekume.epizy.com/lifemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74dfd900-8ecb-4dd8-abfd-85863934d8e9/muxibepuzaxabaparufow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edf99a96-6397-43fb-a879-a212f8f97b13/how_to_get_started_in_bitcoin_trading.pdfIn PDF document text
    • http://kalavelixafuro.epizy.com/78836678232.pdfIn PDF document text
    • http://tukekutiwele.rf.gd/84356179573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb06076f-f9e3-4461-ac68-04867eb43aee/que_es_distribucion_normal.pdfIn PDF document text
    • http://sivisalatifaba.rf.gd/android_republic_vip_free.pdfIn PDF document text
    • http://bekogufepe.rf.gd/6th_grade_math_practice_workbook.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE4A 5560 bytes
SHA-256: a68e1c58c0096aa4ffdf8c55f08f5302b26e1e2a68e07e033246687e4bdb5303
font_01_sfnt_off0000e123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE123 10956 bytes
SHA-256: fd56e69f09fef87b72df81f93baee9e74d3efbbe2e7c1f543a20d304086d3a60

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