Malicious PDF — malware analysis report

Static analysis result for SHA-256 90be58aacddc75c0…

MALICIOUS

PDF

44.0 KB Created: 2020-08-28 08:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ccc79ceb85da9272839b719ebf814815 SHA-1: c3a65db2b6be64055623b3ef055da720cba95f46 SHA-256: 90be58aacddc75c0f6f0c6b7d881395a9607236da3abfb98bf592b729656db5c
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains text related to 'Banderas de la primera guerra mundial' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous other links, many pointing to Shopify domains hosting PDF files, indicates a link farm strategy to obscure the ultimate 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=banderas+de+la+primera+guerra+mundial
    • http://files.muppetstoo.com/uploads/1/3/1/4/131438844/634a2ccf44df46.pdf
    • http://files.innovativestoneconcepts.com/uploads/1/3/2/6/132681296/d76ddc6a835.pdf
    • http://files.tridentcommunicationsinc.com/uploads/1/3/2/7/132710491/kimulepipizodiko.pdf
    • http://xafizibu.myshoppingpath.com/uploads/1/3/1/8/131871699/ravawo-foroguvupim-pewunu-zumufuni.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3031/files/arterial_line_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/3181710164.pdf
    • https://cdn.shopify.com/s/files/1/0437/5032/6421/files/88715576574.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/cees_nooteboom_rituelen.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0297/files/cavitation_reaction_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/84039288781.pdf
    • https://cdn.shopify.com/s/files/1/0437/6893/8658/files/52404753411.pdf
    • https://cdn.shopify.com/s/files/1/0434/9945/4629/files/toxarawawunax.pdf
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/jajusorizebadi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/dodaj_wpis_podaj_adres.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_off00006a3f.bin
f470fbe6ba0c3ec270b7cc6497fec7d8c5ef6268eeed667c8d9890cba17d7526
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3F 5328 bytes
font_01_sfnt_off00007c40.bin
201e1d086607b132990efad45c04839c4536f1a909dbfc13a99d85fd31f0f73a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C40 11428 bytes