Malicious PDF — malware analysis report

Static analysis result for SHA-256 48e048475264e2ed…

MALICIOUS

PDF

39.9 KB Created: 2020-07-14 17:55:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 191e64270d34b11c8373640e06d27265 SHA-1: fd97ced1b304698f41badd50f65f2fe3f2afccc7 SHA-256: 48e048475264e2ed8dc513718bd57090a86375316ebb42e7eb6aabfee3a942c4
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate this PDF is designed as a link farm, likely to distribute malicious content or conduct phishing. The ML classifier strongly supports the malicious nature of this document.

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=math+operation+words+pdf
    • http://files.xileart.com/uploads/1/3/0/9/130969751/4279455.pdf
    • http://files.wisconsinlitmap.com/uploads/1/3/1/8/131860204/c41589789.pdf
    • http://files.definitivearts.net/uploads/1/3/0/9/130969405/zibanepuj_xuzepuparit_fewiga.pdf
    • http://files.whereintheworldiscaseykey.com/uploads/1/3/0/7/130738504/seloko-tomag-vajemisejinal.pdf
    • http://files.whereintheworldiscaseykey.com/uploads/1/3/0/
    • https://lixakukebup.files.wordpress.com/2020/06/jidelubupadesawuxiwo.pdf
    • https://kikujasut.files.wordpress.com/2020/06/2227917303.pdf
    • https://gipetos.files.wordpress.com/2020/06/remibozuwif.pdf
    • https://vigazot.files.wordpress.com/2020/06/82189694552.pdf
    • https://bokanag647162548.files.wordpress.com/2020/06/5017480026.pdf
    • https://fuwewosalija.files.wordpress.com/2020/07/repekan.pdf
    • https://venefivim.files.wordpress.com/2020/07/17738343572.pdf
    • https://zogijag.files.wordpress.com/2020/06/bawivamuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/8669/1998/files/74483931013.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7913659608.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/doragewotupepefe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/21722246526.pdf
    • https://cdn.shopify.com/s/files/1/0432/0185/5646/files/61786943388.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2666/files/22755879431.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sasexenumufuxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/rijavegesakixufotuvatipab.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_off00006025.bin
b1d2593526ee4886d7bc496e21a05724282ad297507e176115fc189143822862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6025 4984 bytes
font_01_sfnt_off00007122.bin
d470b185ad238803a4cc85be9225a4a74650abd51e8ea7bce32088ae31b25669		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7122 9696 bytes

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