Malicious PDF — malware analysis report

Static analysis result for SHA-256 6811c956d023b590…

MALICIOUS

PDF

74.9 KB Created: 2021-04-02 05:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 97cfd88a3a076ddf5e5ce7e5bbd4e48c SHA-1: 820ebe4243cc0f3375451ce21a2b08d88279b50b SHA-256: 6811c956d023b590092c31e71190c231c6915a0ccc99a4f637be29b2a09076b8
126 Risk Score

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 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://mezovuduw.ru/award?keyword=bhagavad+gita+saar+in+gujarati+pdf PDF link annotation
    • http://tells.fun/43334995456ub24o.pdfIn PDF document text
    • http://ek-arenda.ru/what_is_impact_of_riskqt14h.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • https://cdn.sqhk.co/kurapobal/cLOUjj8/fobeziza.pdfIn PDF document text
    • http://in-step.shop/fiwebowofazezkl7u8.pdfIn PDF document text
    • https://cdn.sqhk.co/xugiwatokax/4ccCkgj/5087645182.pdfIn PDF document text
    • http://hookup154.online/alabama_song_weillqz4d1.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikewe/ijdbjce/pevojusumolata.pdfIn PDF document text
    • http://straponartist.com/super_anime_battle_apk53426.pdfIn PDF document text
    • http://mmeueue.space/esoft_accounting_softwarer4w10.pdfIn PDF document text
    • http://autolombardpro.ru/troy_bilt_weed_eater_pull_cord_wont_catchun619.pdfIn PDF document text
    • http://kevakigev.medianewsonline.com/business_words_dictionary.pdfIn PDF document text
    • http://pekibimige.mygamesonline.org/63315330174.pdfIn PDF document text
    • http://copyrighthelp.info/gawimudevomogelanosarbjvxd.pdfIn PDF document text
    • https://cdn.sqhk.co/wavudasawete/hiMhb8G/bengali_movie_bandhan_mp4_video_song.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/vazisi/janatha_garage_malayalam_full_movie_cinemavilla.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/what_size_is_closest_to_7_32_drill_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/2005_chevy_silverado_1500_service_airbag_light.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD262 5456 bytes
SHA-256: 256de6f2b14c9edf0787bab8c452e4c2ff56310d805a46dd8be947fb6ce7690b
font_01_sfnt_off0000e503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE503 10032 bytes
SHA-256: 8f550b3727c7c5b7259008696e4e5a56efb37137efef12e9d1b606da66a68b1c
font_02_sfnt_off0001079e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1079E 16172 bytes
SHA-256: b6a6ca5d1ececf9b8f85cf34f243a5152d852bd6c46ff1fd844468d100e5349c

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