Malicious PDF — malware analysis report

Static analysis result for SHA-256 3015bb0063d18e06…

MALICIOUS

PDF

46.4 KB Created: 2020-08-15 05:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5db98a92d970da74c0c7b9719bf3be7 SHA-1: 7044ece70f9612a26f24ff3ecfb102d35b64a0ba SHA-256: 3015bb0063d18e0691ee83481e70975d48ccfe4a5782b561b4ab03386ffaf17d
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/wb?keyword=teachings%20of%20don%20juan%20carlos%20castaneda%20pdf`. This URL is likely used to lure victims into downloading further malware or being redirected to phishing sites. The document body also contains this URL and numerous other links to PDFs hosted on Shopify, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. 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/wb?keyword=teachings%20of%20don%20juan%20carlos%20castaneda%20pdf
    • http://ropop.ccsdetroit.org/uploads/1/3/0/8/130813765/pawukal.pdf
    • http://files.tamusrt.org/uploads/1/3/1/0/131070469/e7526c6546741.pdf
    • http://files.lalecheleagueofmichigan.org/uploads/1/3/1/4/131437601/vuvinikix-xoxagefebi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6464/files/naruvap.pdf
    • https://cdn.shopify.com/s/files/1/0434/0262/5178/files/57024101836.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/94358196793.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57308776079.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/20289387623.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4342/files/66001321492.pdf
    • https://cdn.shopify.com/s/files/1/0437/7467/3050/files/45851613516.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_off000068d8.bin
5fdfeae5edb1b5275d8fe51169c444a95ea4e495320adb803e07eae85002b3d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x68D8 5324 bytes
font_01_sfnt_off00007aeb.bin
56eed314e5b7074bfa088c4265958e466bd8c49f1a1daa61f87a862d25acc364
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AEB 10736 bytes
font_02_sfnt_off00009ecf.bin
ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECF 4324 bytes