Malicious PDF — malware analysis report

Static analysis result for SHA-256 61f65f7463295826…

MALICIOUS

PDF

48.9 KB Created: 2020-07-14 05:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ec9e3820778dedcbde0805c08592b85 SHA-1: d892262e4e4a26452b61c4cddfeaeb3b226e9f19 SHA-256: 61f65f7463295826851983a1eab8a2504febc86ea483e3f2cfca42471cc79f1d
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to contain keywords related to a 'manual' and a specific product, suggesting a lure to trick users into clicking the malicious links.

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=manual%20reloj%20garmin%20forerunner%2030
    • http://files.exquisitetastebydonna.com/uploads/1/3/1/3/131380251/nebuvufebo.pdf
    • http://files.lakesuperiormqg.com/uploads/1/3/1/4/131409861/6036498.pdf
    • http://files.sweetwaterlax.com/uploads/1/3/0/7/130739571/4942154.pdf
    • http://files.lazypacres.com/uploads/1/3/1/4/131452824/gunewugafafa.pdf
    • http://files.friendsofchristfoundation.org/uploads/1/3/1/3/131383889/7405099.pdf
    • http://files.mytownmarketer.com/uploads/1/3/0/8/130814009/3231709.pdf
    • http://files.davidfrankdesigns.com/uploads/1/3/1/1/131164187/dizavuxiwibedisufe.pdf
    • http://files.daimatours.com/uploads/1/3/1/8/131872198/d6a902d8fa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://vodezaxej935192670.files.wordpress.com/2020/06/57331845187.pdf
    • https://sisukone.files.wordpress.com/2020/06/likerakupifumibot.pdf
    • https://bamidepe.files.wordpress.com/2020/06/57828361104.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90209356055.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/3659120121.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/somogugofekuvebiniraja.pdf
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/72586744013.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60801944673.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/64508916945.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36103472339.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_off000082e3.bin
f5e2802c7f32db4dfddca74e5f763870c5a016951ba162a4212659579280d1f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82E3 5096 bytes
font_01_sfnt_off00009426.bin
ad94809c6a73e01bc3e2e1cb542b9331af524cfb4ce475d7f68d2523ca90859b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9426 10032 bytes

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