Malicious PDF — malware analysis report

Static analysis result for SHA-256 045c351e82beaa16…

MALICIOUS

PDF

40.0 KB Created: 2020-11-01 12:02:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: ec66bef816dfe130ab59c50b49224fe3 SHA-1: c2c7dd7112ccc848618c73b941b0d3ff00dfbff4 SHA-256: 045c351e82beaa164f1bc751c64609f146fbb08d692c29b8135981204e568b24
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/123?keyword=the+hot+zone+study+guide In PDF document text
    • https://zafitageleg.weebly.com/uploads/1/3/4/4/134489703/5838245.pdfIn PDF document text
    • https://wilixutisew.weebly.com/uploads/1/3/4/0/134095986/ebfa6a1.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/3c9b82bf-4c7e-4022-ad4e-c791f2cc793b/deezer_premium_code_generator_no_sur.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/novavanugavivomow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26f42d7b-7876-429b-b30e-22cb93642985/70343943879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7261/3280/files/jones_or_joness_legal_writing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0477/5576/files/sawitapemagurikan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0041/3346/files/corporate_identity_manuals_david_carter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8222/8910/files/53968329953.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b58b399-2c02-4941-ba17-190387341289/9933459753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8992/7588/files/eaton_company_profile.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_off00005fce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCE 4852 bytes
SHA-256: ca6d8d67c3ae7170505a27cf182e28a52866de02c3108d5fde05779da554344e
font_01_sfnt_off00007062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7062 10384 bytes
SHA-256: 12a6bfed4a4767148dcc396536a4c1f7fef3f817bb07996a070dbf02001b4602

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