Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1e0040938afec8…

MALICIOUS

PDF

98.8 KB Created: 2021-03-17 22:58:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 4ed1303b0128e2da0d7e55131d4c2722 SHA-1: dbc7d516dd8ddf6f9093eb1edae62113f4dd1b44 SHA-256: ff1e0040938afec8b1e9fb05bf5efc21c54178f9d3deea51bf78f3dd0acfca69
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a PDF_SEO_UTM_REDIRECTOR_LINK heuristic firing suggests the document is designed as a phishing lure, likely for a free download, which redirects to the URL https://mezovuduw.ru/aws?utm_term=best+rock+climbing+training+book. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://mezovuduw.ru/aws?utm_term=best+rock+climbing+training+book PDF link annotation
    • https://kupafejesuxab.weebly.com/uploads/1/3/4/6/134650707/girebi_dutop_ganivubilope.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426832/normal_5ffefd1371224.pdfIn PDF document text
    • http://gta-msk.ru/best_bp_monitor_for_large_armso8qjw.pdfIn PDF document text
    • https://safesawugu.weebly.com/uploads/1/3/2/8/132814337/99e6e4c93c5c6.pdfIn PDF document text
    • http://fashion-deals.xyz/pancharatna_kritis_lyrics_with_swaras_in_kannadaud5oz.pdfIn PDF document text
    • http://trendmobile.ru/sanezokawixowo6gbjv.pdfIn PDF document text
    • http://meetsoda.club/jixexibazuprdqx4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426424/normal_5ff2551a9474b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419645/normal_5fc7ca3707d72.pdfIn PDF document text
    • http://sparzha.club/48431876866239vd.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/kepaziboja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471995/normal_603765dab3dae.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/4039787a-9f3b-49e3-9f7c-a04660e0d0a9/dewalt_xrp_drill_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/sharechat_app_in_tamil_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/wizovedole.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/naming_acids_pogil_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c328d54-6636-4b94-a125-9f952cf61ef4/what_is_abstract_photography.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/how_high_can_a_24_month_old_count.pdfIn PDF document text
    • http://jujobope.atwebpages.com/persuasive_writing_prompts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1082b44a-7083-40a0-ac77-be5bccf08e02/volume_price_trend_tradingview.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10009 6588 bytes
SHA-256: c6acebe3750ab55c09714fa1b34f6c70ddae3ce202e1a088ffcbc34adab53285
font_01_sfnt_off00011052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11052 3064 bytes
SHA-256: d01e7d3a4e99b645d6ba9e0529bed8734a3e49056909a36afbc23c6aac238715
font_02_sfnt_off00011b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B1D 5372 bytes
SHA-256: 436c0ebf0bcac0199f649869d3dce15096962377cf2a76fd6a7d737b6dcae2d1
font_03_sfnt_off00012d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D4C 7304 bytes
SHA-256: 68d3f115c19616694ef7b6c13d4d6b4d0ee49653b607d70c77c9408f13d74666
font_04_sfnt_off00014275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14275 10924 bytes
SHA-256: f6fb9720fe4b6ceab0545af94bada4e8ec73b7d491caf2dfbd3795100a5b9178
font_05_sfnt_off000167ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167CA 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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