Malicious PDF — malware analysis report

Static analysis result for SHA-256 5863ded54efa4757…

MALICIOUS

PDF

68.8 KB Created: 2021-03-21 10:54:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c89df8ec0f799c784ec4ecd222130292 SHA-1: 6d32630ad6a7189925bc007764fc8eb1b2da1ba4 SHA-256: 5863ded54efa4757d085472e01e84dfbd9eab702eebc7ba37e32602b21a9a18a
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://ponafet.ru/wix?keyword=chants+of+belial+pdf PDF link annotation
    • http://totalcreditcheck.info/8395904394412k7j.pdfIn PDF document text
    • https://zuxutupod.weebly.com/uploads/1/3/4/5/134587355/jodegafevupewi.pdfIn PDF document text
    • http://limaxinsto.xyz/33765648065foxgv.pdfIn PDF document text
    • http://gadetebes.sportsontheweb.net/geralds_game_cast_haunting_of_hill_house.pdfIn PDF document text
    • https://golotarati.weebly.com/uploads/1/3/1/8/131856611/likelatejun_tiledoz_lovisa_rugabe.pdfIn PDF document text
    • https://lizodeva.weebly.com/uploads/1/3/5/3/135342900/778377.pdfIn PDF document text
    • http://pankreatitum.ru/baladorewixof5zrz.pdfIn PDF document text
    • http://zanartcc.net/cunto_tiempo_tarda_el_cuerpo_en_eliminar_las_hormonas_del_implante48f48.pdfIn PDF document text
    • https://koreluluzoma.weebly.com/uploads/1/3/5/9/135972167/4ba79aae.pdfIn PDF document text
    • https://koloputumoti.weebly.com/uploads/1/3/4/8/134887370/sudawo.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/dipivixudekoziriderejinum.pdfIn PDF document text
    • http://kamefutebiwef.mywebcommunity.org/24605061118.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bivojeda.atwebpages.com/97212997451.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c7d0c24-d8f0-4788-914d-0cc70a0abd74/sezixako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de24b1db-7399-4502-9022-def34c61d5b7/the_practice_season_3_episode_14_cast.pdfIn PDF document text
    • http://najukelosuned.myartsonline.com/33562760049.pdfIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/38630746929.pdfIn PDF document text
    • http://wizigipixe.atwebpages.com/82272092156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfc1009-312c-4f5d-9856-ab54e322e1d4/what_is_rush_delta_sigma_theta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c2a95d2-c304-4543-b298-26cd048750d0/buvigusaderixap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13085ea9-de31-4996-be95-557ab879d732/pmbok_5th_edition_free_download_espaol.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_off0000ce49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE49 5076 bytes
SHA-256: d409cee3e2385bafa081941ff9ca61fd1a7a09354db5b2698626a0dd50e2ff28
font_01_sfnt_off0000df82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF82 11560 bytes
SHA-256: ea378f827a5e2d972096e8281c27b932819430914bf21f35b374fddd47e8bdc0

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