Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d18c8c57e2d1ca…

MALICIOUS

PDF

71.1 KB Created: 2021-03-02 12:21:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 48f100a2a7c386ef85ef2bb4d96f40b5 SHA-1: 3e16cb65c3be0831cbdb19002068a53258fa1abd SHA-256: 91d18c8c57e2d1ca5d3eaf9fa8f232e16e95ae200707a3bd4bd474fdff0700e5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=is+775+answer+key PDF link annotation
    • http://letxxnx.org/average_salary_for_cloud_computing_in_indiahdd5c.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/sgdgjhh/angry_birds_fluffy_toys.pdfIn PDF document text
    • https://sojexima.weebly.com/uploads/1/3/4/5/134584898/nojaz-wodavererexur-nafije.pdfIn PDF document text
    • https://zawobulogu.weebly.com/uploads/1/3/1/0/131070044/topenoj-ledeku-kasuviribovopog-pepifalagixelaf.pdfIn PDF document text
    • https://cdn.sqhk.co/vekotevudoze/dHjjjjb/synthesia_full_version_free_2018.pdfIn PDF document text
    • http://yesitalia.fun/wobadawugaxzmj5.pdfIn PDF document text
    • https://cdn.sqhk.co/keridola/iLjhjgf/dj_mix_app_for_pc.pdfIn PDF document text
    • https://rosajojuzexoked.weebly.com/uploads/1/3/0/8/130874599/1df518a71.pdfIn PDF document text
    • http://top-salez.site/posesirijepopilogedilofu701yf.pdfIn PDF document text
    • https://vusejamujaled.weebly.com/uploads/1/3/1/4/131437056/1239245.pdfIn PDF document text
    • http://thecaffeinatedstudent.com/html_css_table_spacing_between_columnsi9t3v.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/ig82Dva/suzurojiforafaduwutitabif.pdfIn PDF document text
    • http://grenkasalo4.xyz/faxavizalamupofuleke28h39.pdfIn PDF document text
    • https://wupupuredizuso.weebly.com/uploads/1/3/4/8/134894828/6053356.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/piwanisaj/tratamiento_amigdalitis_bacteriana.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/bawolubonixixo.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/alliterate_former_actress.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/9931916997.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/23181712138.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/core_critical_thinking_skills_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/wavepad_audio_editor_pro_mod_apk.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_off0000db00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB00 5048 bytes
SHA-256: ea36ffa94e93e9985e01e2dc6bcc8a13b57c4e3aa7f3dca524eea21893af3dbf
font_01_sfnt_off0000ec62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC62 10196 bytes
SHA-256: 0d115e71f3a9b6f739a256acca24cb052f7c3cd4a3ce6c75cba230a52020e143

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