Malicious PDF — malware analysis report

Static analysis result for SHA-256 061617ceda5620e4…

MALICIOUS

PDF

68.9 KB Created: 2020-11-12 14:34:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0c0c85abeb7e995ed7180e9683812f69 SHA-1: 961ca370b00238d7b0b94c73d3f4b9bb8d9546c7 SHA-256: 061617ceda5620e4474a9f05ceffde549d4634f8530ddd7837fcfdc8ecd827f1
222 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, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/123?utm_term=upload+pdf+to+wix In PDF document text
    • https://pesajupamobe.weebly.com/uploads/1/3/1/6/131607203/tubevulawagawo.pdfIn PDF document text
    • https://xemuputib.weebly.com/uploads/1/3/4/5/134506680/wimobami_xisutotile_dozubokujof.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/6b263291-ce08-4c64-a31e-4616b32f94cf/26836508307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26c412ec-1bb0-4711-ad7a-1b3104effc6c/kopa_and_vitani_fanfiction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3e753ba-dd98-485e-8b30-1038f5836f8b/tumutefefozajeda.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/pipudemuxefalufugamisaruf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/413bcccc-873b-4217-bed7-604253fb4faa/92202852142.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/gifemesejominufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba80d113-f43a-484b-af08-02f6e5d253c3/vazisi.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/star_tribune_chatham_paper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12a600b6-39e8-44ba-a00e-d416f0a07399/66494884195.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e39962-93b6-4166-a426-92226080002d/fema_is-100.b_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d45890b4-ebea-4534-af80-ffff639bf67e/sizajupijuvuju.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/facetime_app_download_free_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/black_clover_fana_elf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7931b398-c393-4847-ad90-e43ee8d41904/zowadaloxuvuzene.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC70E 4912 bytes
SHA-256: 17fef8f8c286eaeb1099cb2b6337006f5a14a2162f9b1ba276c0621afd2cb7d6
font_01_sfnt_off0000d7ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EF 2188 bytes
SHA-256: de4d6777c42a9a0b9cccd4030f0599f61369bf950d554910e4eb2a9885b29305
font_02_sfnt_off0000e20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20E 10696 bytes
SHA-256: f66f759b5f93f9f8df1cb1c1050bbad3e5b6ab3298fe36b25cc0fd6823e2b585

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