Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fff70520cbe2f8…

MALICIOUS

PDF

37.5 KB Created: 2020-08-30 03:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64757bb67289a5a959be12c11be52f32 SHA-1: 481e20d341e72e78fcfc1bc94e9cc1a979740e0d SHA-256: 02fff70520cbe2f8707c28286551d9ad3e8494e07fe701424329e06c22c11125
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to mimic search results, directing users to a malicious redirector. The primary malicious URL identified is https://ttraff.cc/wix?keyword=autobiography+of+a+yogi+pdf+in+hindi. The document's structure and embedded links suggest a phishing or SEO poisoning attack, aiming to drive traffic to malicious infrastructure.

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=autobiography+of+a+yogi+pdf+in+hindi
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_16f9b168beec40f4aba744411290e806.pdf
    • https://static.usrfiles.com/ugd/ce14f3_ac4060747a594f5f9c3ee67a0de6dd1b.pdf
    • https://static.usrfiles.com/ugd/b7082a_95709e465d0c48cd8534ba86a3bf3025.pdf
    • https://static.usrfiles.com/ugd/73cb9e_3539e63be7514c50bbbcdc978f1f77fe.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/zuzexiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/5397/3657/files/psicologa_de_la_emocin_el_proceso_emocional.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/kufap.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/82825188247.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4423/files/musemipesofefonavaronu.pdf
    • https://static.usrfiles.com/ugd/b0b521_5454208972d24a668bf18e9bae278909.pdf
    • https://static.usrfiles.com/ugd/b8c837_abffd63dda0b4bf8ad2058abcf4aeb5a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9279de599f68444c995f795baf3c8916.pdf
    • https://static.usrfiles.com/ugd/3f80ec_621398dc3a0f4e06bbb265eff50a2eb2.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbd68313aa79451b801647f1eb970551.pdf
    • https://static.usrfiles.com/ugd/0a593f_70346181fe8f49659e28193483e9fb6d.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_off000054b3.bin
bce6384e8f4ba73539fa169b6c6179718d1dcb9fd5aa05c56df5cd9649af9666
pdf-font-stream PDF embedded font (sfnt) at offset 0x54B3 5324 bytes
font_01_sfnt_off000066d0.bin
e2d7f3da6196722736b076d33baaaec9da69b7d91dee1f975efe36706a16c449
pdf-font-stream PDF embedded font (sfnt) at offset 0x66D0 10144 bytes