Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0bcffd67157aa9…

MALICIOUS

PDF

43.3 KB Created: 2020-09-01 18:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20d826997ec2db14030406d4a5583fff SHA-1: fd9329b08fada1a343f6d80cb08e37bee6fbed19 SHA-256: ce0bcffd67157aa9a7797d77230427f7ac4720e92666b11f1ed8aa38694246df
154 Risk Score

Malware Insights

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

The PDF file contains a link disguised as a search result for 'dailymotion apk android 4.4', which redirects to a malicious URL. This suggests a phishing or social engineering attack aimed at tricking users into visiting a compromised site. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector link further supports this assessment.

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=dailymotion+apk+android+4.+4
    • https://cdn.shopify.c
    • https://static.usrfiles.com/ugd/b8c837_68d2c8855b2a4a2b8bc2f4f02c9fc655.pdf
    • https://static.usrfiles.com/ugd/80c1db_8b63f7cf95564327bd9443f44c36b5ef.pdf
    • https://static.usrfiles.com/ugd/79cb75_3fdf62313cb9423c80216d530893fd0e.pdf
    • https://static.usrfiles.com/ugd/0baf77_31cdd4827603449cb8e72f29c499b592.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_4e45d8109ae24e2cac0bfad8f84c3b5c.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bd8a78e42484b0187cfcc6f3640ee6e.pdf
    • https://cdn.shopify.com/s/files/1/0430/9182/0711/files/muvonin.pdf
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/6823829400.pdf
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/duganoxedim.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/wondershare_filmora_9_apk.pdf
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/55115876616.pdf
    • https://cdn.shopify.com/s/files/1/0431/3730/2690/files/990081601.pdf
    • https://cdn.shopify.com/s/files/1/0434/3008/4760/files/ccleaner_pro_full_crack_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/giwapezi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/zamijur.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c03.bin
89e5bc40cf592654c78c4ef2da8580841ad5a8d4ac348f5cb771abb467e4e46a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C03 4880 bytes
font_01_sfnt_off00006c84.bin
4d018aa88f08ff0ad45138bbadeeb32c6dc00c7e22ac40142b77e9f7fe25754d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C84 11504 bytes
font_02_sfnt_off000091d3.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x91D3 4324 bytes