Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b4ffda3be644e90…

MALICIOUS

PDF

70.0 KB Created: 2021-04-01 12:38:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f5b0884ec09acd34bb71e85690d03771 SHA-1: d8da282bc4620579d3d251c5a1325d0a14e311a0 SHA-256: 0b4ffda3be644e9047d5cca7535c52b16d263389b20fb883bd5041d034ebcc82
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 0.9998

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://gimoguvi.ru/wix?keyword=frank+parsons+paper+company+inc PDF link annotation
    • http://discount50it.pro/gugonulauaxgp.pdfIn PDF document text
    • http://nigma24invest.online/digav74dng.pdfIn PDF document text
    • http://logmeinnow.xyz/23714870314ento9.pdfIn PDF document text
    • http://sberbank.link/how_to_perform_stage_brutalities_mkx1vbgg.pdfIn PDF document text
    • http://wiruxenolap.22web.org/adiga_adiga_video_song_free.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/96757496-4f88-47fb-bf9d-1ca5ec8d62c4/the_three_questions_don_miguel_ruiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/249526a9-0a30-411d-a0e8-93212d4e00c6/trilogia_the_young_elites_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/skinny_boyfriend_jeans_ripped_american_eagle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b16ae76e-50a4-405f-91ad-c1fcfd0b2278/77725629030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/962f1339-7d11-4c24-bb91-4a36e9eb1916/garmin_forerunner_220_manual_svenska.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee1b0be2-08b5-4ce6-9255-59d84fd87d54/release_your_brakes_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/57490579257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9cb93c8-23ed-49a8-a33f-81a1f425c9a1/where_is_the_thermostat_on_a_2010_chevy_malibu.pdfIn PDF document text
    • http://jolivawojo.rf.gd/33534354421.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ca14a76-ebcd-4899-84f5-48c3600290c7/little_fires_everywhere_last_episode_recap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb3479ac-3bf4-40cd-9eee-e3a0e170fd38/how_to_replace_fuel_line_on_poulan_2150_chainsaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7763aed8-fc7d-46b9-878f-49b5cf09d969/how_to_read_level_2_quotes_thinkorswim.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/naming_polyatomic_ions_and_acids_worksheet.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_off0000d526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD526 5168 bytes
SHA-256: e2336c97e3a87542a29977d26fe086c9320418ad9263d8035dc781589f1a0b06
font_01_sfnt_off0000e6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B2 10776 bytes
SHA-256: 73824bb384573e1c38f6bb99d39ee4945135da3034a8d23cb2c59dc50de55e30

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