Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c40d2cd23e6062…

MALICIOUS

PDF

45.3 KB Created: 2020-11-06 02:16:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 65bb5c42296385daf0fbcd38a59c96cd SHA-1: 8af4d2d9039090376baa4d71fb533d9846f3d5e5 SHA-256: e7c40d2cd23e60626268c6414a4642114232c179721b73f723e4f534a7ec76ba
154 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a callback phishing scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. It contains embedded URLs pointing to redirector infrastructure, specifically 'https://traffking.ru/aws?keyword=limited+brands+access+aces', which is flagged as malicious. The document's content, though obfuscated, suggests a lure related to 'limited brands access aces', likely intended to deceive the user into contacting a fraudulent support line.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://traffking.ru/aws?keyword=limited+brands+access+aces In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_5f8aac5191302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f88bd61c8538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379371/normal_5f911365a9d15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379487/normal_5f970034745eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390097/normal_5fa3d19bed3f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_5f8eececcbddc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374984/normal_5f9505f1e67f4.pdfIn PDF document text
    • https://aces.limitedbrands.com/UserMgt/LoginUser?cmd=loginIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad34988-ea65-49eb-9214-94cf01017dde/32472030187.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/84630565188.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7115 5132 bytes
SHA-256: b9e3cf879be67a319016aba7b52e145582e69c18fb3b1ff7d44a5a4f9d6869aa
font_01_sfnt_off0000826f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x826F 11488 bytes
SHA-256: bc12a04c4ee3b4002969ee0a05809c5f774d5543d7f3f011b96bdca5e5afd82b