Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6713380a628410f…

MALICIOUS

PDF

48.3 KB Created: 2020-11-02 04:03:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 091e2594d2bfc278f3adc61ceb88cca6 SHA-1: b9c63a4786a8ff10b2bcc7ab06ad211dbd2fe592 SHA-256: d6713380a628410fd4f2d76b56377b09f386e6d8d7318fec27dc6c3fca730916
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 link to a malicious redirector, identified as 'ttraff.me', which is likely used to funnel victims to further malicious content. The document also hosts a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. While no scripts were directly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful sites.

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.me/123?keyword=ia+study+guide In PDF document text
    • https://sejabekozifox.weebly.com/uploads/1/3/4/2/134266090/zosux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_5f8fab7270eec.pdfIn PDF document text
    • https://xavoxoxuda.weebly.com/uploads/1/3/1/3/131379246/1973593.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7f236f77-428a-46a4-9f40-c00179957226/ruwoxakumugetalaz.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/kusufig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4a9144a-839e-4754-9569-9913d468d887/61775165209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8442/6663/files/sozeninelirad.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/kawotixuwekunap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba5b4e59-9d0b-4bb0-9b77-35f83eac62d1/dusosaxezubakonujuk.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/ponatifiwomupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9462/9788/files/93542914611.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/laundry_room_folding_table_with_hanging_rod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bca9cb4-956b-4d92-bc03-ca2eae571bb0/goddess_of_yesterday.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_off00007394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7394 4572 bytes
SHA-256: cc26636b7dc088e074ac024268df30c00f71d3e11f1e1525ce7efa0a020e1b7e
font_01_sfnt_off00008325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8325 10380 bytes
SHA-256: 6ccb805982be2bea1f0e22936ad0d0da9e1ce2d95d170b13bad0e2f5c6577141
font_02_sfnt_off0000a656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA656 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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