Malicious PDF — malware analysis report

Static analysis result for SHA-256 2889a6f00d839854…

MALICIOUS

PDF

49.8 KB Created: 2020-08-12 15:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1eec397886dc0811f8f3bd5228402989 SHA-1: ce84fd24915716255c2a10ac5d837a9478fb6ee9 SHA-256: 2889a6f00d8398540a4011e6e4ba8763ec3b8edd90ce9d4961dbabe7da6b5d29
152 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at `ttraff.com`. The document body, though corrupted, suggests a lure related to 'genetic counselling', likely to entice clicks on the embedded malicious links. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms a malicious intent to lead the user to a harmful destination.

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/pify?keyword=importance+of+genetic+counselling+pdf
    • http://files.nvansistine.com/uploads/1/3/0/8/130813701/c3791.pdf
    • http://files.helenpapworth.com/uploads/1/3/2/8/132815298/vupetekolopigixud.pdf
    • http://xupaloni.cathedraldogandcat.com/uploads/1/3/1/6/131637136/jirabo.pdf
    • http://dufiv.hdfsbridgetwalsh.com/uploads/1/3/1/0/131070867/nomulisaj.pdf
    • http://jojate.neighborhoodpetscle.org/uploads/1/3/1/0/131070487/11eb39544aea51d.pdf
    • https://cdn.shopify.com/s/files/1/0439/4100/3432/files/case_interviews_cracked_sankalp.pdf
    • https://cdn.shopify.com/s/files/1/0454/7198/9918/files/cardiogenic_pulmonary_edema.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/kuwabegit.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/59438822274.pdf
    • https://cdn.shopify.com/s/files/1/0449/0136/7963/files/3d_exporter_for_navisworks.pdf
    • https://cdn.shopify.com/s/files/1/0431/7288/8742/files/ansible_ad_hoc_commands.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/fubavezaro.pdf
    • https://cdn.shopify.com/s/files/1/0433/7388/7649/files/caterpillar_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0445/1749/0847/files/80933568699.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/hernia_de_disco_lombar_fisioterapia.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/1758029065.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.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/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008486.bin
3a14d1aed067bad14808697bc908eb652e3ac5145b1b78efca2b6fae8763b929		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8486 5412 bytes
font_01_sfnt_off000096ca.bin
632410fbaf204ffa52f97c19a8ed275605e3462cbafdf6d7bbba143670d341b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96CA 10272 bytes

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