Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d5ea67f88d42939…

MALICIOUS

PDF

72.3 KB Created: 2020-12-17 18:02:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b001b81bddcbbdefa386cf2187429e29 SHA-1: 31b2cb1d56fc2249f61c0d923225aff1b7c3bb19 SHA-256: 5d5ea67f88d4293972f1557ddd49ba3cae7407527fe98e640d1b4b4cc44cf3f8
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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.
  • 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://ggtraff.ru/aws?utm_term=life+insurance+underwriting+guidelines+in+india In PDF document text
    • https://fiwisito.weebly.com/uploads/1/3/4/7/134715438/dulewatudovuz.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/polexebuj/coreldraw_graphic_suite_x4_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/invoice_template_photoshop_free.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/free_smite_gem_codes_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/adenite_traitement.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78cbdd2523e4b70c2822a/t/5fc901246cc5762da7acafc6/1607008551546/reelgood_streaming_guide_remote.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2f9c4116eb00e3c598670/t/5fca21b34e3f3d251743cc4f/1607082420053/recharge_master_data.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf4895db6f322e656e3e16/t/5fd696c1dca22152604a2ec4/1607898818642/xorigotimonarafojodud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/414d33d2-246d-4d1b-a212-d0f41c041ae1/xaxulibe.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/marshalltown_tools_trowels.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/dazukinazusoruge.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC979 5220 bytes
SHA-256: 93b2418962ad68f68b8bfd0a492bdbe78a73b847ae296a187ddf02038e788ef3
font_01_sfnt_off0000db60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB60 10540 bytes
SHA-256: c0b1468a464225f53db4a5556b1dc3d020130253a0f515c676299bbad3c2901b
font_02_sfnt_off0000ff56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF56 16080 bytes
SHA-256: e8a2a40c81204f68d188656ee186563bb41cec9665ac8bf1c139965098426a80

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