Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d19eb0d34aacb52…

MALICIOUS

PDF

67.8 KB Created: 2020-08-05 18:33:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e03a203e88401a60baa7b025edb2d15f SHA-1: cc19c20ccfc82f03cf2ae33c2ebf7b6b72c78f48 SHA-256: 5d19eb0d34aacb527679718de73a048118392af1ddc93830243dbd0eba626d57
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or to obscure malicious redirects. The primary malicious indicator is the link to 'ttraff.com', a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to lead users to harmful 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/pify?keyword=articulaciones+del+craneo+y+cara+pdf
    • http://files.theorionfoundation.org/uploads/1/3/1/8/131856365/xefubip_sobivu.pdf
    • http://fobukon.gcaseyphotography.com/uploads/1/3/1/6/131606407/titix_mavipo_tivawinej.pdf
    • http://files.mfgconsultinginc.com/uploads/1/3/2/7/132740637/b55b03.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/37470449445.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53151925343.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/luzexefavugiluzasola.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/90979751206.pdf
    • https://cdn.shopify.com/s/files/1/0437/1870/5306/files/pam_and_tommy_lee_sex_tape.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/18280022239.pdf
    • https://cdn.shopify.com/s/files/1/0434/6209/9097/files/55709014182.pdf
    • https://cdn.shopify.com/s/files/1/0436/4248/6934/files/47573854167.pdf
    • https://cdn.shopify.com/s/files/1/0437/4809/8209/files/7003349805.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/kamen_rider_ooo_ankh.pdf
    • https://cdn.shopify.com/s/files/1/0432/0172/4580/files/gudutifelome.pdf
    • https://cdn.shopify.com/s/files/1/0437/2905/9992/files/rakifafepimisonufonode.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/tazevefosagupuwevasezaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1589/files/powolopesabata.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_off0000cacb.bin
bb6e9cd86c505ceaba9576b192852d372a55c780c83236d288a51399e13da384		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCACB 5240 bytes
font_01_sfnt_off0000dcb8.bin
95231118948a7eeac287b194ae98a5193d8509a4d773f834a4e9fc6b7c165532		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB8 10944 bytes

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