Malicious PDF — malware analysis report

Static analysis result for SHA-256 f11e4e9e67436b68…

MALICIOUS

PDF

39.3 KB Created: 2020-08-22 15:14:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 072901bf26a551aaf8d709a49a5ab65d SHA-1: ac68678691e23351a07ec92a6aecade34c64d237 SHA-256: f11e4e9e67436b6875a7db2dfccbdb36e283cde86c82a805ccc4d9e687017f14
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though partially corrupted, includes the text 'Bruxelles formation contact' and the malicious URL, suggesting a lure to a phishing or scam page. The presence of a large number of external PDF links, many hosted on shopify.com, indicates a link farm strategy, likely to improve search engine ranking for the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=bruxelles+formation+contact
    • http://files.chrisremitzcpa.com/uploads/1/3/0/7/130776042/xepigus_givelo.pdf
    • http://benetur.realjackoftrades.com/uploads/1/3/0/8/130874493/75737ac676e9.pdf
    • http://files.store.northwestbeesupply.com/uploads/1/3/1/1/131164011/1611343.pdf
    • http://renigogo.silverhandpickups.com/uploads/1/3/1/4/131407089/serenelidataro_jidavofo_givasirox.pdf
    • http://wizumexa.faustreading.com/uploads/1/3/1/8/131855997/vujokinalem_bebuzem.pdf
    • https://cdn.shopify.com/s/files/1/0438/1114/3842/files/zanitupojitosomo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9208/9759/files/tidubaje.pdf
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/45103159038.pdf
    • https://cdn.shopify.com/s/files/1/0436/3816/1561/files/physiologie_tube_digestif.pdf
    • https://cdn.shopify.com/s/files/1/0440/6840/5413/files/detewux.pdf
    • https://cdn.shopify.com/s/files/1/0432/1394/7041/files/86124205206.pdf
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/midalubujirasapudaken.pdf
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/learn2serve_test_answers_tabc.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/black_panther_movie_in_tamilrockers_isaimini.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/56405041525.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_off00005d1c.bin
324012747a899c39b953df8f5822324401b1eea46fc8f65cdc305fe2da4ce679		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1C 5144 bytes
font_01_sfnt_off00006e87.bin
7294f0ddc47be50cd5bcff6be231c467cdede6f42353d864d66792d65dacc765		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E87 9980 bytes

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