Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c9eee31f203c03…

MALICIOUS

PDF

39.1 KB Created: 2020-08-31 15:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e14a087ebad7e6495baa38b8d2b0028d SHA-1: 3298e1c4c19e85e9aaeb5f1f221dd4d60e38825c SHA-256: 32c9eee31f203c03e4cef138ee5797e887cfddf321c29b856a0115b85f17d924
154 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One of these links, 'https://ttraff.ru/wix?keyword=bluecoats+2019+drumline+sheet+music', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous other Shopify links indicates a link farm strategy, likely to obscure the malicious 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.ru/wix?keyword=bluecoats+2019+drumline+sheet+music
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/pusemesotamin.pdf
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/weights_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/xubepubugosoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/sixilupegovoxafadoza.pdf
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/las_brujas_de_san_petersburgo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9487/5039/files/adobe_premiere_cc_2014_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0448/4985/6669/files/biopsychosocial_model_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/mugakafomug.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/jozon.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/binezuwimoparal.pdf
    • https://cdn.shopify.com/s/files/1/0435/3032/2071/files/advanced_cardiovascular_life_support_acls.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/sixudifaxuzadaxife.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/bavupubironiti.pdf
    • https://cdn.shopify.com/s/files/1/0434/6570/3590/files/pastest_mcq_dentistry.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/56202233323.pdf
    • https://static.usrfiles.com/ugd/a43ec6_e4f088e7122647528d1479576f6f5508.pdf
    • https://static.usrfiles.com/ugd/3b7182_975899ecc4f54c3cb0d8e1141598b7ff.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_off00004c74.bin
323514616e11f0c2942480b74ee30bb105d6b7ea355a4c7ceb25d65b0fda748e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C74 5712 bytes
font_01_sfnt_off00005fb0.bin
54d0dd03abc648192a2f4ae5aa47b5615da4e151281b7786c9d8e3a883b96da0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB0 14492 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.