Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ca9e627daab4f8b…

MALICIOUS

PDF

50.5 KB Created: 2020-08-06 11:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e089129cb0981f362be3b4fcbf2d2ad2 SHA-1: 8e1827b0d193cc443cd4a03d683ba09e1b47339d SHA-256: 2ca9e627daab4f8b799bd27ece6a5234e6a11e34a032b07c191eb2940b4e238e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a large number of embedded links, many pointing to Shopify domains, but also includes a critical redirector link to 'ttraff.ru'. This suggests a link farm or SEO poisoning technique to lure victims with a fake download. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/pify?keyword=interior+design+book+pdf+download
    • http://files.1010hall.com/uploads/1/3/0/7/130738993/mufomujike_betitojanurug_vipomuv.pdf
    • http://files.jandsperformingarts.com/uploads/1/3/1/3/131381003/8349968.pdf
    • http://files.springphysio.co.uk/uploads/1/3/2/6/132681931/142610.pdf
    • http://files.explorestanton.com/uploads/1/3/2/6/132681343/kozirikemadave_boteguzoba.pdf
    • http://files.freakzhub.com/uploads/1/3/0/9/130969000/marizejojaduji.pdf
    • https://cdn.shopify.com/s/files/1/0436/8393/8457/files/antigona_sofokles.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/35601562850.pdf
    • https://cdn.shopify.com/s/files/1/0428/2764/5095/files/unifi_guest_network.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/44986783470.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/98911049278.pdf
    • https://cdn.shopify.com/s/files/1/0441/1323/2024/files/movupikejekutudox.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/58170831274.pdf
    • https://cdn.shopify.com/s/files/1/0435/3412/3160/files/tezadabilofizepazaruxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6897/1418/files/bank_audit_process.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/52386956931.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5765/files/53261542121.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.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_off000086c9.bin
8a9efe36a37e3aeb8e26c3aba85f919b75467418fabbac2420a53f788eabfdea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86C9 5440 bytes
font_01_sfnt_off0000996b.bin
e35b7307753a41c742df1f511d0dacc715cc33b55f493065e5b7d69dce421015		 pdf-font-stream PDF embedded font (sfnt) at offset 0x996B 10272 bytes

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