Malicious PDF — malware analysis report

Static analysis result for SHA-256 01cd9f78f9c8694f…

MALICIOUS

PDF

43.4 KB Created: 2020-08-31 07:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7598f0557e69c5b03ca0c789a78a6511 SHA-1: bc692b87dcdc406344be601c4df4a2913f3f9139 SHA-256: 01cd9f78f9c8694f29d280d35a289107cc3d0069fdd1a432240331c5f3020757
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link that redirects to known malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though obfuscated, contains the text 'Report card comments for impulsive behavior' and the malicious URL, suggesting a social engineering lure. The presence of numerous other PDF links also indicates a link farm, likely for SEO poisoning or traffic generation to malicious sites.

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/wix?keyword=report+card+comments+for+impulsive+behavior
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/9904c2_cf65ecedd5ac4f77bb0a38cf61b1690a.pdf
    • https://static.usrfiles.com/ugd/0cd019_85e712f98fb24a07a0e9a7f030ac993b.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d8407c9959e4ee9ae53b1189bb69f36.pdf
    • https://static.usrfiles.com/ugd/73f3b0_1bfbc39edb604cb9b2f6a9da2e0448b1.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdf
    • https://cdn.shopify.com/s/files/1/0435/9526/8264/files/febekafibuzuwetotebaxudi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/weludolewesesej.pdf
    • https://cdn.shopify.com/s/files/1/0429/8424/3363/files/wausau_weather_radar.pdf
    • https://cdn.shopify.com/s/files/1/0434/7992/4902/files/34909968994.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31178329868.pdf
    • https://cdn.shopify.com/s/files/1/0428/6716/3302/files/39238669736.pdf
    • https://cdn.shopify.com/s/files/1/0431/0587/8167/files/18094608385.pdf
    • https://cdn.shopify.com/s/files/1/0439/3277/8651/files/ufw_port_forwarding.pdf
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/folejuribuselepizuv.pdf
    • https://static.usrfiles.com/ugd/b5aed9_10fb441b875f477fa747799b391d4564.pdf
    • https://static.usrfiles.com/ugd/b8c837_97ae035b272045479be49a6e15ce87e1.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_off00006b8c.bin
4c7072b128d92041622f7b25757508cd7868aeaa81941301c2bce46ae63ae8f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8C 5604 bytes
font_01_sfnt_off00007e72.bin
8c06dc9506bb9ec3c7dc40e5e4e3fdc4ab8eda2f473ab43ee944655515e10d9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E72 10048 bytes

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