Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0e0986c17be55bf…

MALICIOUS

PDF

42.8 KB Created: 2020-08-30 00:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e6368018d3ce9982536e7ae7c3e216f SHA-1: 095387a57141fbf9ce64453cc7c7eaa7e67a9085 SHA-256: c0e0986c17be55bf88041f37723de7aaa1e82edd1efa9fdae25677714f97febe
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link is designed to lure users into downloading content, in this case, a game. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The ML classifier also 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.cc/wix?keyword=download+geometry+dash+2.111+noclip+pc
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/47289242924.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7223/files/internal_control_system_in_auditing_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/189771081.pdf
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/bing_bong_song.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/free_video_er_for_iphone_app.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6986/files/padawukuxawebidovim.pdf
    • https://cdn.shopify.com/s/files/1/0437/8850/1143/files/83863741993.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/lasimabo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/81380739810.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/69903907756.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/venumu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/28710179782.pdf
    • https://cdn.shopify.com/s/files/1/0460/1063/0311/files/83545950509.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bivunamu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2737/2955/files/aw_tozer_attributes_of_god_download.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_off000067e7.bin
d021e8c1b513a79967189832485ac989e80d6a1e772bae8b88c61dba6af07f6c
pdf-font-stream PDF embedded font (sfnt) at offset 0x67E7 5896 bytes
font_01_sfnt_off00007bf4.bin
18fcaac45e1efa1767eca2fa629ef7218ce93ab6d1dafc20701808f841544754
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF4 9992 bytes