Malicious PDF — malware analysis report

Static analysis result for SHA-256 570c655303863d76…

MALICIOUS

PDF

38.8 KB Created: 2020-09-01 18:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 305554eaa255826848183339f12b2e2d SHA-1: 6d9e1652f23a3a13e6ff82b3d3d6b1dd32241acb SHA-256: 570c655303863d764cadcd87446f437d6b2b93b8c668cbf53c00f7093dd1b2d4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external PDF link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'atvi earnings report date', suggesting a lure. The primary attack pattern involves redirecting the user to malicious infrastructure via a link, likely for credential harvesting or further malware delivery. The ML classifier strongly indicated maliciousness.

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=atvi+earnings+report+date
    • https://static.usrfiles.com/ugd/d902bb_daf6ea69e0064f95bea38255b5a89914.pdf
    • https://static.usrfiles.com/ugd/34e21e_d15c142955204d6e98d9d252f8541305.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c2822a9f28f4b95b2d64dc3fd33af63.pdf
    • https://static.usrfiles.com/ugd/86319b_a79b0f5185c84a5daf568294b97fb75d.pdf
    • https://static.usrfiles.com/ugd/1cfe37_4656eb5bbe0a49dab51c29bfffbe3a92.pdf
    • https://static.usrfiles.com/ugd/73cb9e_78f403bc289943f1b59b7c72a1c7a8d9.pdf
    • https://static.usrfiles.com/ugd/ad2ade_d3d89ec1c476436c81cddd7bb1e95c91.pdf
    • https://static.usrfiles.com/ugd/b8c837_22813a1d775f470e99dea0f87da2c60b.pdf
    • https://static.usrfiles.com/ugd/99965f_bf07a93c789141e4bea9b32bd7049fe2.pdf
    • https://static.usrfiles.com/ugd/b8c837_a1befd1435fb456193bef9b441353e4c.pdf
    • https://static.usrfiles.com/ugd/b8c837_fba0567a109a46a6868974efd7aa2b5e.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c266b54b4b447ba8891eae0752843d8.pdf
    • https://static.usrfiles.com/ugd/b8c837_60c9c85ca29d449d84a253961dab7a14.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3674/files/moxolomutagijejumoreb.pdf
    • https://cdn.shopify.com/s/files/1/0429/0805/7759/files/odd_future_tape_vol._2_zip.pdf
    • https://cdn.shopify.com/s/files/1/0433/3076/4968/files/69836993254.pdf
    • https://cdn.shopify.com/s/files/1/0447/1973/4938/files/metakowikubujodikafiji.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_off0000577c.bin
d2f7524df61f165f6d040fa66a82571323e1bb55ed520b81795396cd4a2e8bf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577C 5144 bytes
font_01_sfnt_off00006919.bin
5dc18a4f660756f93453a3c597f71f63553463f8a6fc15e96f165b88d3717494		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6919 11060 bytes

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