Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b01c46e902929b7…

MALICIOUS

PDF

38.0 KB Created: 2020-08-31 11:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 759e02a7dfce5f5ee65f449eee44b3ec SHA-1: 17a2f94ffef5d7c90ab6d5343488e3036894a4c8 SHA-256: 7b01c46e902929b7e23c0b5d3c5d516c0a3a9abd99144580ec2f675032a96c7b
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the string "Coke name generator" and the malicious URL, suggesting a social engineering lure. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, further supporting the malicious intent of redirecting users to potentially harmful content.

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/wix?keyword=coke+name+generator
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b7306e_56ad777d6fa84d2e9c4e59e6583d7531.pdf
    • https://static.usrfiles.com/ugd/9e53d4_83d9e32e6b764e3daa9013a0391a40b4.pdf
    • https://static.usrfiles.com/ugd/bfbc46_f057008fec5b4127978adcf32dffc955.pdf
    • https://cdn.shopify.com/s/files/1/0432/9118/1214/files/coreldraw_x4_crack_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/2011/5358/files/regal_hotels_international_holdings_ltd_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0440/2331/6630/files/cursive_handwriting_worksheet_for_grade_2.pdf
    • https://static.usrfiles.com/ugd/b8c837_3430b57eb72440158e15e13c15b71568.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed9760caa78041888ba70a56e72639cb.pdf
    • https://static.usrfiles.com/ugd/a86d68_ea78c4d2c2a4479e9a9762d540708370.pdf
    • https://static.usrfiles.com/ugd/20d83a_87bc18566e6d48e0b106ce96fb463d0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_f227c3244df544bd9bb2b3da61f43bb5.pdf
    • https://static.usrfiles.com/ugd/df73ab_3e5050573a824f52b308aa880ea43742.pdf
    • https://static.usrfiles.com/ugd/12f4eb_83f04254f3b34738a023cc1c140428e0.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058a6.bin
5864cbc0894f581362b7cfc8030f9bf879bb9219a1b79b7a75db3ba41d4d9e13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A6 4764 bytes
font_01_sfnt_off000068c9.bin
f929df45528c086a36678523017c2a6febb508d7f46633ba68915a64c5fe7132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68C9 10128 bytes

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