Malicious PDF — malware analysis report

Static analysis result for SHA-256 40018fe4385b5709…

MALICIOUS

PDF

42.0 KB Created: 2020-10-30 18:45:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b233245f2fbe2be9eff65a477db5e768 SHA-1: bf1a0bd637019d9f2deaa3a4ae5f89c4dbd16d84 SHA-256: 40018fe4385b57092851b38baded7be6fe3243cf3942d96a12736e0658062f8f
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to redirector infrastructure or are part of a link farm. The primary malicious link identified is https://ttraff.link/123?keyword=divinci+speakers+dv-6030, which is known to lead to malicious content. The document's structure and content suggest an attempt to disguise malicious links within a seemingly legitimate document, likely as part of a phishing or spam campaign.

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.
  • 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://ttraff.link/123?keyword=divinci+speakers+dv-6030 In PDF document text
    • https://gajokemijibefe.weebly.com/uploads/1/3/4/4/134467094/rimemevelinoze-mipepol-pufujemulefodu-janula.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/66e6c690b19c4d2.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/35f35b77-ed9d-4c03-b0a6-e2d547f460b8/9438970581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3ac7350-63d5-4868-bfdd-28244b415483/radapukizatop.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/bisacodyl_davis_drug.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/75861462253.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/warfarin_coumadin_davis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33a08a0e-6235-44b9-9a48-341586a4ae52/bosch_exxcel_fridge_freezer_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bc7540d-72a2-45e0-ade6-9e64b10bad01/14878017919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c452fae-1de8-4d99-825c-17d9a37af188/13469507869.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f08e5360-4506-4bf6-8a8d-880a420603be/download_guardians_of_the_galaxy.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/apnoea_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4defba8-4271-4546-9200-1f1a077e0e87/xakaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1a4c105-72fb-4025-94f8-247d54a64d6a/64352247675.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 7

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_off00006283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6283 5652 bytes
SHA-256: e2fb31e20dc607bc19a3dcc58bf1acd4b4ff1572c6282d91d316bf6768e13c4a
font_01_sfnt_off000075e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E2 10940 bytes
SHA-256: 873ac0f35b0e76555e362b20b16c540046cf2fb21a84c85d3b9fc4d2a3c59ed3

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