Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1016cdbb6050970…

MALICIOUS

PDF

74.6 KB Created: 2021-03-20 20:45:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 560e0626ffe3e79574b7f9ef360f4b83 SHA-1: 25df0ea23638c30c742e8f085b1df4ece7e0dd9e SHA-256: d1016cdbb60509702eff31b23306c5e354d902c55978db32ee6ce858b911908b
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains heuristics indicating it is a malicious SEO redirector link, likely for phishing. The embedded URL points to a domain known for distributing malware. The document body, though heavily obfuscated, contains text related to a multimeter manual, suggesting a lure to trick users into downloading a malicious payload disguised as a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://golowaki.ru/aws?utm_term=alicate+amperimetro+fluke+337+manual PDF link annotation
    • https://cdn.sqhk.co/gefimiwotux/Xijihg9/droid_depot_app_not_working.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415327/normal_604ad6bea394c.pdfIn PDF document text
    • https://cdn.sqhk.co/pawekenu/bgczAjt/tank_battle_world_war_2.pdfIn PDF document text
    • https://cdn.sqhk.co/tamaladafa/igd2a7Z/7994492654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388839/normal_6025e37eae7ee.pdfIn PDF document text
    • https://cdn.sqhk.co/gijimexuv/cjjRibO/stack_buffer_overflow_basic_1_root_me.pdfIn PDF document text
    • https://cdn.sqhk.co/nukunudakiju/jficokd/shreemad_bhagvad_gita_in_gujarati.pdfIn PDF document text
    • https://cdn.sqhk.co/nogugojuri/Qheheje/street_dancer_ringtone_download_zedge.pdfIn PDF document text
    • https://cdn.sqhk.co/wefegiwezon/eii4nKx/sukowoxewamixusoxasa.pdfIn PDF document text
    • https://cdn.sqhk.co/nawakema/VgedEjj/bixiwanoxubanivetob.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/650053db-d2a5-4923-800f-c56898374e1a/how_to_make_waffle_stitch_crochet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eb35acf-ec03-4a0f-8158-0320e9cd9ed5/kitchenaid_pro_600_mixer_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac456a06-1e47-4b98-bca0-83bcec2c8c3c/what_does_aye_mean_in_romeo_and_juliet.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/98502914146.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c24587c6-7260-4db4-a1c2-c545509012f7/why_wont_my_vacuum_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/chemical_bonds_formed_by_electrical_attractions_are.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8ed3e81-fe81-4a66-b127-1bdff2e39454/bupewuzarabitar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac4cb64c-5d3c-4253-95a1-db3804f56105/dyson_dc25_hose_assembly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f8c904e-25ff-4de3-9b61-e5ea5857311b/how_do_students_use_edpuzzle.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/41915088076.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

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2F 5280 bytes
SHA-256: a2e91a8a181e8fbf2802bfdc2e043f79e3c659607d131f226486c59adb6d9a5b
font_01_sfnt_off0000f121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF121 13940 bytes
SHA-256: 7e41ac95b876c6e8e6272d5afe75d5001c157dc09df226951c1699c9bddd7373

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