Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff25460e774b3a4…

MALICIOUS

PDF

46.8 KB Created: 2020-08-22 15:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2294f6d72964f0ae322496aca89a456e SHA-1: 34b628546ebac59b56e5016fd21048d2f4edc6e7 SHA-256: 7ff25460e774b3a489bb6b197583f4b00ec16ff3e67ff0e385c2adc69b378bf9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, with a critical heuristic identifying it as a redirector link farm. One prominent link, 'https://ttraff.com/pify?keyword=e+aadhaar++software', suggests a lure related to Aadhaar software, a common tactic for phishing. The 'SE_MFA_LURE' heuristic further indicates an attempt to harvest credentials or session tokens by mimicking multi-factor authentication prompts. While no scripts were explicitly extracted, the PDF structure and link farm suggest it's designed to lead the user to malicious infrastructure.

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.
  • 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
  • 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=e+aadhaar++software
    • http://fujexe.gardentogourmet.com.au/uploads/1/3/1/4/131453674/dijejisasanu_pifejorori.pdf
    • http://samogi.pskehal.com/uploads/1/3/0/7/130775792/295697.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/wawenakovofakeba.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1766/files/61251378839.pdf
    • https://cdn.shopify.com/s/files/1/0440/1401/0518/files/gunasopepekisemezutedon.pdf
    • https://cdn.shopify.com/s/files/1/0434/1835/3815/files/fetikajomutiregep.pdf
    • https://cdn.shopify.com/s/files/1/0435/7410/0127/files/rolokom.pdf
    • https://cdn.shopify.com/s/files/1/0434/9604/6752/files/ahsanul_bayan_bangla_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/45333082464.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6556/files/wiiware_wads_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0648/files/windows_10_pro_activation_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/auditing_notes_for_b._com.pdf
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/9556435311.pdf
    • https://cdn.shopify.com/s/files/1/0437/7490/2430/files/kupinomepogadajukinuk.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_off00006e3f.bin
36f0a6a168545e47a1c99a913db71e605da601e600d9f0ca18114b233aabd5eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3F 5012 bytes
font_01_sfnt_off00007f59.bin
36d3cdcff47dc5b2800d99f070868a811fe7554dce18f818509ced981dd0c506		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F59 15312 bytes

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