Malicious PDF — malware analysis report

Static analysis result for SHA-256 6580165ef6a66f28…

MALICIOUS

PDF

41.3 KB Created: 2020-08-29 13:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c424196a22b91c36ba40620748d730a SHA-1: 8daa056a5d09cbadff65c4f892ed82b1061304ee SHA-256: 6580165ef6a66f284cfd6b4d6ca7c5a945699341693a45651a3b134f4eae3645
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, suggesting an attempt to lead the user to a malicious site. The document body, though heavily obfuscated, contains text related to 'Hamilton collection plates price gui' and a URL that aligns with this theme, indicating a potential phishing or scam lure. The ML classifier also strongly flagged this PDF as malicious.

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.cc/wix?keyword=hamilton+collection+plates+price+gui
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_82ffa41a2f0a4ea58ef08650f38e5c37.pdf
    • https://static.usrfiles.com/ugd/b8c837_be3f52f0c8ca4976b35fcf2b3e52cc59.pdf
    • https://static.usrfiles.com/ugd/b8c837_93b387b90d8041d1806cdeb586303db4.pdf
    • https://static.usrfiles.com/ugd/b8c837_752b1aaa1f574dcb93a3fbfb7c4d109f.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0555/files/12348506593.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5879/files/sidesokijodijidazumivu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7099/files/39147807750.pdf
    • https://cdn.shopify.com/s/files/1/0429/2519/5427/files/lanefedilulujumajekov.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2089/files/3_am_matchbox_20.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/classifying_numbers_worksheet_kuta.pdf
    • https://cdn.shopify.com/s/files/1/0434/6281/9990/files/30903181622.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/airtel_cheapest_data_plan_for_android_phone.pdf
    • https://cdn.shopify.com/s/files/1/0429/4092/4063/files/bidodutanin.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_off00006300.bin
2ac656fd5277ebfd4fcc7eb89c674faf462317a759c60299d01ae39e599cb7a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6300 5216 bytes
font_01_sfnt_off0000749b.bin
2afff9067ad06190a3ae7eb909eda5d3655e2f117aaf90025985ecc5fe4d07cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x749B 10584 bytes