Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c9cfe30059ded8…

MALICIOUS

PDF

45.0 KB Created: 2020-08-14 13:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c94e62053b5c03c250677c23f2915d48 SHA-1: 86d106bf8d7b4ede2c59988e63fed5bfcb73d091 SHA-256: 96c9cfe30059ded8f82546d40f2c3de4eb5ce04bba3008c2c6df193b4d32a170
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF document contains multiple invisible links, two of which are associated with CAPTCHA lures and others point to a known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=bangla+comedy+image. The document's structure and embedded links suggest a phishing or redirection attack aimed at tricking users into visiting malicious sites.

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.
  • 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.
  • Invisible PDF links to CAPTCHA-themed web lure high PDF_CAPTCHA_LINK_LURE
    PDF contains invisible clickable link annotations that point to a CAPTCHA/capcha-themed web path. This is a common phishing and ClickFix-style routing pattern: the PDF itself is inert, while the linked page performs the credential prompt or fake verification.
  • 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/pify?keyword=bangla+comedy+image
    • http://files.jesseswarriors.com/uploads/1/3/0/7/130775786/14d696298a3.pdf
    • http://govebif.pianoscore.net/uploads/1/3/1/3/131380081/besiwemeniwe-gafow.pdf
    • http://files.communitysolutions4u.com/uploads/1/3/1/4/131437064/3730710.pdf
    • http://files.babbleturbo.ca/uploads/1/3/0/8/130874585/limobalezolusisor.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/21710613653.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/55514425899.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/vefuder.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/6620368202.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/simadigojimeraxa.pdf
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/balojubasapudabatimodaxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4754/1146/files/33558535635.pdf
    • https://cdn.shopify.com/s/files/1/0437/9662/7618/files/55374322638.pdf
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/3387642545.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3671/files/melaleuca_product_store.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7918/files/recaptcha_is_required.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000594d.bin
46d3ba4525af17ce5e2688f34cf283aca548c86b2f35abafa3dc2ccc47f0428d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x594D 5136 bytes
font_01_sfnt_off00006ab0.bin
38adc9c6cb8986c9e04c26161b1ad85e53dc9f2ef9023ebd4542b2d6556950ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB0 8440 bytes
font_02_sfnt_off000084e3.bin
357c195319a68678191bd3ad0f3b2dbb2610d6c42a8c93d9fe546e6554bfe06f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E3 10044 bytes

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