Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe53ffc81767307e…

MALICIOUS

PDF

75.0 KB Created: 2021-05-15 03:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fd36c300a74991d1a03a9c4d6da7e049 SHA-1: effc67b729c0faafc23ad8d2e7b85f41d081213a SHA-256: fe53ffc81767307e384bf3930848b95ca1c07211d4a83039a032fdc019ef7a00
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 0.9993

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://lozipotod.ru/strik?utm_term=basic+mathematical+function+in+excel PDF link annotation
    • http://generalmassage.online/ninafodesasebekepqm4up.pdfIn PDF document text
    • http://mestorating.ru/my_hero_academia_episode_8_google_doo2hcq.pdfIn PDF document text
    • http://littlenat.space/856475639923g4zi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371807/normal_60273ad7321e3.pdfIn PDF document text
    • http://shoop-fh.ru/327661064423uf1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459941/normal_606b3d4fc8e51.pdfIn PDF document text
    • http://rojaxol.iblogger.org/15834486550.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454438/normal_5fe3986e1a856.pdfIn PDF document text
    • http://afracheat6.xyz/do_all_adverbs_end_in_ly5j1tq.pdfIn PDF document text
    • http://malarusexomobaf.22web.org/44163265214.pdfIn PDF document text
    • http://nawoxafibajove.22web.org/99548889294.pdfIn PDF document text
    • http://rilukilezoxe.22web.org/39671409699.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375344/normal_6005872ed1297.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://konomubexidop.epizy.com/oh_baby_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbcf672c-4807-4e10-af88-b82b94fcbaef/can_you_use_turtle_beach_headset_on_ps4.pdfIn PDF document text
    • http://vipupirewikome.rf.gd/construction_safety_policy_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c9d2bcb-9061-4f8a-90ac-a33ec53075e4/kunikipu.pdfIn PDF document text
    • http://keluwuvofaj.epizy.com/70645337812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14d4f987-d806-46ca-8143-7304105ece4e/twilight_saga_full_movie_in_hindi_download_mp4moviez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2df716ee-4e14-4445-8908-fd416b790134/antique_national_sewing_machine_value.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dde6057-40d4-44b3-acab-7a3e041de3e4/94869382572.pdfIn PDF document text
    • http://jozadedosirokeb.rf.gd/what_is_cottage_food_production.pdfIn PDF document text
    • http://gamigigoloje.epizy.com/ageratum_conyzoides_description.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_off0000e78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78B 5144 bytes
SHA-256: 5df314244dcd7c9061b6c04c921c3dcd6c66dcd30b39b87f7dc01a1927c33cb7
font_01_sfnt_off0000f8f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F0 11000 bytes
SHA-256: a15929e67e6d31c194eac16ae623b964106fdfac80c4b6ed93b6641b082c0c73

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