Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ab289f7328a8aa…

MALICIOUS

PDF

76.1 KB Created: 2021-04-26 21:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a0782ddd6584848fa1a00bd579d450b7 SHA-1: db172bd19b33f7d833d3abf91e41fb3ae61640b6 SHA-256: 18ab289f7328a8aaeccc5faddd5354f16d3e8cbaf296283c4fe4c37009dd84c7
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 0.9995

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://fokemale.ru/strik?utm_term=how+to+become+better+at+public+speaking PDF link annotation
    • https://cdn.sqhk.co/letarezetap/glkiijh/37947139217.pdfIn PDF document text
    • http://selozufuwadapuw.66ghz.com/apple_ipod_nano_7th_generation_price_in_pakistan.pdfIn PDF document text
    • https://cdn.sqhk.co/gulidepiz/ohfhhf7/97610280499.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/bihdsfI/8981382713.pdfIn PDF document text
    • http://menetufebev.22web.org/nibokomafemeji.pdfIn PDF document text
    • http://liloleg.iblogger.org/healthrider_h70t_treadmill_disassembly.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/aIZBa3E/mubanazajawupixir.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/aQgc8jh/track_my_school_app_for_school_staff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473971/normal_5ffbc0eb0fa37.pdfIn PDF document text
    • https://cdn.sqhk.co/pofoxubo/2PiimEW/black_beauty_book_cover.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482617/normal_6034e2747e6f3.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/zomuzigo/kerunaganomamorapawusalo.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/craftsman_router_table_instructions.pdfIn PDF document text
    • http://faxiwuf.epizy.com/keurig_vue_v600_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0621dc07-433a-47d0-8017-939981c89a2d/gutosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c742604-3b05-4a29-9cb7-657ca207da8d/we_the_kings_sad_song_piano_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/286467cc-6123-4944-a074-7fd96a1fa4a9/ge_spacemaker_xl1800_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed83cea-92ff-45a4-89d3-37fd920f0b27/is_a_biology_degree_useless.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/6676309476.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/1007020801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52143c55-3f65-4f51-9ad0-038e7b0543b7/buzodozoveratenil.pdfIn PDF document text
    • http://fujifumava.epizy.com/zaful_swimsuit_size_guide.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_off0000ea9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9A 5508 bytes
SHA-256: 099c38c3cc54af429fa0c62079ac8d19a303f462c9750374c7e396f2c905b1a1
font_01_sfnt_off0000fd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4F 10976 bytes
SHA-256: b49b3cfbb89a7c2bef22773c35e2a9a862c3756f82f1235e1a8f7c07b875ab57

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