Malicious PDF — malware analysis report

Static analysis result for SHA-256 65583f1325249229…

MALICIOUS

PDF

63.4 KB Created: 2020-07-30 17:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06650c660cf3580055acfba981a97e56 SHA-1: 18e732405310d904f5114d93aed9672d08743dd2 SHA-256: 65583f132524922953092563d5cecc7a769d9f33805e1a24dec7b35413155da0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of malicious redirectors and link farms indicates a likely attempt 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=arab+before+islam+in+urdu+pdf
    • http://files.myssma.com/uploads/1/3/1/3/131383665/5522337.pdf
    • http://files.lutterburnfineart.co.uk/uploads/1/3/0/8/130874633/zinuvu.pdf
    • http://files.sweethomeelegance.com/uploads/1/3/1/0/131070327/4981564.pdf
    • http://files.elizabethwestbrook.com/uploads/1/3/0/7/130776081/9717580.pdf
    • http://files.backyardgnomes.com/uploads/1/3/0/8/130874031/744b6d5e3347.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1757/6354/files/54846184504.pdf
    • https://cdn.shopify.com/s/files/1/0434/7677/9174/files/topebilonekuva.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/30108306548.pdf
    • https://cdn.shopify.com/s/files/1/0432/7908/9824/files/35777635102.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/vixunilexibevawomipew.pdf
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/vazojurisuwoni.pdf
    • https://cdn.shopify.com/s/files/1/0432/2279/4395/files/xunexogemavelegujerugawu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/58949755125.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/56235504819.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/lazisatedaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/4294/7750/files/zakesuvava.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/32292943872.pdf
    • https://cdn.shopify.com/s/files/1/0430/6891/5863/files/pajilevoduduwedenidata.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/nazejeneni.pdf
    • https://cdn.shopify.com/s/files/1/0432/7967/9656/files/66830009839.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_off0000bcc2.bin
64c8e7caf1fe8e532bbd3c45fac9e91a560dbe2d5aa3dd8732ac1e2dd0b27999		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC2 5116 bytes
font_01_sfnt_off0000cdf9.bin
71a64de863a2630d99c830e52a88b41cd9dd9fa65802a98260d1e0a6947d2e7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF9 9924 bytes

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