Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e600c67fe731f1e…

MALICIOUS

PDF

45.4 KB Created: 2020-07-16 16:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1b04ef0b1f42ee8df13052894c86b24 SHA-1: 474b0b107665b0748066884d088816a198332564 SHA-256: 9e600c67fe731f1e94943b1da66ce3152bc1b65d06e8cb2aa671afeda3d15213
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf. The primary attack pattern appears to be directing users to malicious sites through a link farm, potentially for phishing or malware distribution.

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/wb?keyword=fundamental%20niche%20pdf
    • http://files.wildaboutwampum.com/uploads/1/3/0/8/130813111/galijusugamefo-rovelek-gedori-zivamefejuwu.pdf
    • http://files.fixfonezfast.com/uploads/1/3/2/6/132696029/1cad3b61ca381.pdf
    • http://files.hsartinc.com/uploads/1/3/0/7/130775817/8f608d27.pdf
    • http://files.stalwartarms.com/uploads/1/3/1/3/131383269/biwuba.pdf
    • http://files.stalwartarms.com/uploads/1/3/1/
    • https://rokezubiro.files.wordpress.com/2020/07/nimijapolunowelefakuwoso.pdf
    • https://gipumagu.files.wordpress.com/2020/07/pudititowije.pdf
    • https://xarufuze.files.wordpress.com/2020/06/19906107437.pdf
    • https://duxaluma.files.wordpress.com/2020/07/69453745356.pdf
    • https://runowabak.files.wordpress.com/2020/07/24078009345.pdf
    • https://guzubuxokom.files.wordpress.com/2020/07/14692375045.pdf
    • https://raroxek.files.wordpress.com/2020/06/fazotiziroj.pdf
    • https://dolajova.files.wordpress.com/2020/06/81603548221.pdf
    • https://wubolijog.files.wordpress.com/2020/06/9232998018.pdf
    • https://cdn.shopify.com/s/files/1/0428/4393/0791/files/sonasotitut.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93236297381.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/5003550851.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/xapen.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/nidoterutotodesufidumuli.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/lopegivetane.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87743453122.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_off0000759f.bin
411e98ddf0ebdc162aa39e05e314bf95108807be5080167d84e65c4f6df5118d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759F 4848 bytes
font_01_sfnt_off000085ee.bin
9c93ad38ba42d41fd78884e1f3b287c3578c9259226df15ae2e975d0a101b38d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85EE 10100 bytes

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