Malicious PDF — malware analysis report

Static analysis result for SHA-256 13417ac541c3ca89…

MALICIOUS

PDF

40.9 KB Created: 2020-08-31 05:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 731370897fd1f8741cff31371ae85d8d SHA-1: 65d91caa0a0ccd035f558aa9bbae3746af931bc7 SHA-256: 13417ac541c3ca89515892477e05fa4f876efe88d524c6fe21210cddf091c94a
242 Risk Score

Malware Insights

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

The PDF contains a lure related to downloading an Aadhaar card, which is a common tactic for credential harvesting or distributing malware. It includes a link to a known malicious redirector, ttraff.com, and a large number of other links, suggesting a link farm designed to obscure the true destination. The ML classifier strongly flagged this PDF as malicious, supporting the observed redirection and lure techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=download+aadhar+card+with+aadhar+number+only
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/volob.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/84295180811.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1632/files/suddenlink_channel_guide_lubbock_texas.pdf
    • https://cdn.shopify.com/s/files/1/0451/1688/3109/files/le_bouddhisme_pour_les_nuls__tlcharger_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6661/files/demand_planning_in_supply_chain_management.pdf
    • https://cdn.shopify.com/s/files/1/0451/3228/4057/files/a_level_chemistry_edexcel_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/5302/2369/files/psp_iso_games.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/fakavaxuzanepodine.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/4766051859.pdf
    • https://static.usrfiles.com/ugd/7baf93_a96dc99a01f840b39db4dc0e469d3236.pdf
    • https://static.usrfiles.com/ugd/32acb1_2351f2d3b83d4de097e972dd78e45ad4.pdf
    • https://static.usrfiles.com/ugd/b8c837_def89ea1257645e09c74abcd83d51160.pdf
    • https://static.usrfiles.com/ugd/f80014_bcdb878d146c4144874c6683770e354e.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_off00006172.bin
fc08faeeb5352b79f3810ef6c334ce64b92a1851cd8109ffbe5750a390f38e8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6172 5336 bytes
font_01_sfnt_off0000737d.bin
d14c63fafa0bf2e9dc2667af02a12d15b4b2bcfabca94bf35b5612bf9d4f300c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737D 10328 bytes

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