Malicious PDF — malware analysis report

Static analysis result for SHA-256 57001e79c47813c4…

MALICIOUS

PDF

144.0 KB Created: 2021-04-04 15:42:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0e9a7d371e2222c726a8c4b58fa1c97a SHA-1: 599454b3c9a8bfe713d5840cfed5ac2018359fce SHA-256: 57001e79c47813c469b55fb339d680586fad03ada167b5ac3068ae5d1ee47564
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to an external URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL points to a suspicious domain, likely used to host phishing content or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://zajinet.ru/strik?utm_term=iliad+book+1+summary+in+hindi PDF link annotation
    • https://cdn.sqhk.co/sobexofap/brja9ig/lightroom_cc_export_settings.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466146/normal_5fc6018a94920.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/flVjhgc/zikubuwapikawu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499958/normal_60468d15b410d.pdfIn PDF document text
    • https://cdn.sqhk.co/soruwere/DZjb5ZC/43441776937.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/0cjgxzt/gangster_wallpaper_cartoon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383921/normal_604f50c921c26.pdfIn PDF document text
    • https://cdn.sqhk.co/guzamuvi/hisgijg/bang_bang_song_lyrics_ariana_grande.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366055/normal_5fcc749ba863f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468537/normal_5feb42bff19d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450638/normal_5ff755d244fd5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419003/normal_5ff2e862543c2.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/lijopavexanuse/fillable_form_in_word_2016_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44c12892-0fce-4eb9-9670-f574b823d14e/can_you_renew_drivers_license_in_gardendale_al.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d818ded-0bcb-465e-a2f4-713ebe56fb02/6023740732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb0038b1-c827-4dd4-9337-961875ba473f/are_there_vr_movies_for_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/analytical_chemistry_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/298bdd91-f0f6-4b90-a64c-02f3f211d25c/74502998023.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 6

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_off0001cdc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CDC9 5360 bytes
SHA-256: f8bd40d5e3ba7eefd90f7a8231548eaa53f68a173edc17dcdd319f4492f27774
font_01_sfnt_off0001dfdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DFDD 21432 bytes
SHA-256: 0e6b4d0c5f456a5a68526c3b2b2419f11ed14d0009a2b601a6362e58a727403a
font_02_sfnt_off00021ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21AE2 16672 bytes
SHA-256: 8bf7ff0eb0efe3067a67179536627c1462877cc6d7ec4f8271c86d3301b4d37d

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