Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b80e22f3ea5e04b…

MALICIOUS

PDF

50.5 KB Created: 2020-08-31 14:38:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1239a0a711c8563085d0c666f9c3023b SHA-1: cebcb316d2f3037af37a77154f76bf69ce73f98e SHA-256: 8b80e22f3ea5e04b19ce891f5d74fe7f649bb26cb8524d8abd8db4d708707973
152 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to a known malicious URL (ttraff.com). The document body, though heavily obfuscated, contains text related to 'create interactive report in sap abap' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF also hosts a large number of external links, many of which point to static.usrfiles.com, indicating a potential link farm or SEO poisoning tactic to improve search engine ranking for malicious content.

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.com/wix?keyword=create+interactive+report+in+sap+abap
    • https://static.usrfiles.com/ugd/b91566_ab31383c39d745f3b5a3edb8afdc489d.pdf
    • https://static.usrfiles.com/ugd/e5412a_c5bb67368c984cad957a908840d31949.pdf
    • https://static.usrfiles.com/ugd/dc98cc_41c526b6bd224d62a1c7503dcfcec6e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ceb8b81ccd44384867f06605ed506c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_e43635ec5705449cb025bf6588570ddf.pdf
    • https://static.usrfiles.com/ugd/c1615c_5676c1099c1247bda87bb18d6b83084d.pdf
    • https://static.usrfiles.com/ugd/7598fa_cff771cffe84489297973eabe81c464e.pdf
    • https://static.usrfiles.com/ugd/1be480_5cc078c7870c409dacce93bbad79e31b.pdf
    • https://cdn.shopify.com/s/files/1/0438/6367/0939/files/titukiminuje.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0156/files/inference_worksheets_5th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lubogalevomiwubojaxijafax.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/clases_de_ingles_para_nios_de_preescolar.pdf
    • https://cdn.shopify.com/s/files/1/0435/6135/3371/files/naar_new_song_babbu_maan.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1786/files/gawaxenatavisawova.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007951.bin
3c690d8d543ea81375341f9fd727d0f0140ce4c2ed02f7c2cf26476913648dc3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7951 5000 bytes
font_01_sfnt_off00008a5c.bin
e08e8203a89deff6c7239c24e26b37202d1fd4c6dcd6464483aa0d8055da39c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5C 15944 bytes