Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc8011389b80b46e…

MALICIOUS

PDF

46.5 KB Created: 2020-09-11 01:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a6095e1369f6f15f7257dd3b2082e1f5 SHA-1: 2ffbc38e28822ea77fc1616f0c58a5b55e070616 SHA-256: cc8011389b80b46e412cdc6fa534c2f5cbd38354edeea179edd2df05c88237e6
154 Risk Score

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 external PDF files hosted on Shopify. One prominent URL, 'https://ttraff.club/wix?keyword=accelerated+math+book+7th+grade+answers', is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO spam campaign designed to drive traffic to malicious sites, likely for phishing or malware distribution.

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.club/wix?keyword=accelerated+math+book+7th+grade+answers In PDF document text
    • http://files.lillyzuckerman.com/uploads/1/3/1/1/131164275/3317ea6ee87.pdfIn PDF document text
    • http://wutorim.lucesaid.com/uploads/1/3/1/0/131071057/8d7af.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://cdn.shopify.com/s/files/1/0436/3426/2169/files/3d_animation_courses_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/agrger_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/23976784131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6539/3831/files/samsung_wb100_shutter_speed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1161/0520/files/adidas_yung_1_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/91679742575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4929/files/99376528456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6283/4853/files/dusirumuvezibosasaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/58451530868.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_off000069bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BF 5460 bytes
SHA-256: 5383c48143b57eb9f24a159c9749ffbb72ef3c6e9524c8bcd1930ea31456a262
font_01_sfnt_off00007c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C33 10188 bytes
SHA-256: 2d2f59e4eddeb5a52bc15e3fca79ef33437c9c65c836f60d71601d72027456a4
font_02_sfnt_off00009ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EE3 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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