Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b5fc3c547352f10…

MALICIOUS

PDF

43.0 KB Created: 2020-08-15 17:18:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a437821792328e1780ca1b3f7e286493 SHA-1: f109733a30fb370e5f8b6ca9e4b8167ec01668f3 SHA-256: 7b5fc3c547352f108c68d457a28818de04a6298e5ebf2c10076edcc3a1c5309d
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that redirect to malicious infrastructure, specifically a link farm designed for SEO manipulation. The primary malicious URL identified is https://ttraff.com/wb?keyword=age%20proof%20pdf%20download, which is likely used to lure victims with a deceptive pretext. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or scam 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.com/wb?keyword=age%20proof%20pdf%20download
    • http://files.novatogsdaycamp.org/uploads/1/3/1/6/131637695/1687042.pdf
    • http://files.coachmattaz.com/uploads/1/3/1/6/131606260/9321190.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/tisefirasoze.pdf
    • https://cdn.shopify.com/s/files/1/0428/5736/5670/files/minecraft_pe_blocks_id.pdf
    • https://cdn.shopify.com/s/files/1/0435/4726/3131/files/wekusademivuduzazoxu.pdf
    • https://cdn.shopify.com/s/files/1/0447/8458/2813/files/amazon_cloud_certification.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96989945255.pdf
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/43337353422.pdf
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/46761741457.pdf
    • https://cdn.shopify.com/s/files/1/0455/6849/1685/files/toniruduwimasopage.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/58744688432.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/34442963192.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/descriptive_writing_for_grade_3.pdf
    • https://cdn.shopify.com/s/files/1/0428/7220/9574/files/56229058425.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f4c.bin
0056626f22401a66a2cd4dcbb9bfaa4a46378cb028a74d325cddf213b84f7821		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4C 4772 bytes
font_01_sfnt_off00006f98.bin
f6ee5edf9a2f390dcf207cbc8e1bb8f25b410df6d7a84c113927d890f72a9406		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F98 9760 bytes
font_02_sfnt_off00009113.bin
8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9113 4324 bytes

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