Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd395731490d1614…

MALICIOUS

PDF

163.1 KB Created: 2020-10-06 12:58:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f923d5535f1e24585f6c7f61cb61706f SHA-1: e92ce66fc98acc54719c25efd017b22fb1448e9c SHA-256: dd395731490d1614cd3fad6715bfdd54a3ebee2a2d0d3c702b74e0271b9cfc30
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is highly indicative of malicious intent. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely used to redirect the user to a malicious site for further exploitation or phishing. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence of a malicious attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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/pify?keyword=the+bridges+of+madison+county+script+pdf In PDF document text
    • http://vetol.conflictchange.com/uploads/1/3/0/7/130739344/rebafajazo_masinivijewu_zenan.pdfIn PDF document text
    • http://files.activatinghistoryatduke.com/uploads/1/3/1/4/131437005/nozupipajuper.pdfIn PDF document text
    • http://files.littleladyo.com/uploads/1/3/0/9/130969004/furopigolijur.pdfIn PDF document text
    • http://files.andreabeaty.com/uploads/1/3/0/7/130739951/divakixabow-gupapoxagag.pdfIn PDF document text
    • http://files.australasianeducare.com/uploads/1/3/1/4/131483234/5df4c2e7ad08.pdfIn PDF document text
    • http://zamematir.tintawitaelderliving.com/uploads/1/3/0/8/130874038/8938673.pdfIn PDF document text
    • http://files.4compliments.com/uploads/1/3/0/7/130740118/mimupa_xevin_tewinawijabez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0724/1123/files/colt_m1861_navy_cartridge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8129/2706/files/el_anillo_de_los_nibelungos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0255/2735/files/rodeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/born_at_midnight_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4677/9552/files/pontiac_389_block_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73d7e432-a493-45de-ac4c-bd5133da0124/17446637505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/794d55cb-8b99-42a6-aee4-3a815e92f3b7/vuzawazarakabafi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23C62 5728 bytes
SHA-256: 80c16c81b0440461c2c3437e6d6a275ca37b70b960c6fcb9d507089623f05429
font_01_sfnt_off00024fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24FB9 13960 bytes
SHA-256: 3bd220bfb14e602e1bfac0f8b5d92250f990b9dab9d9c6eb9d02380c5d42a501

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