Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac78f2cff08f0bbe…

MALICIOUS

PDF

47.0 KB Created: 2020-08-19 10:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dba2bcd53051f9779066dfc7f702c9db SHA-1: e55241a077be6035b03d15c7e3ae448eea289cb6 SHA-256: ac78f2cff08f0bbe6a6af0b76d76b291ed140e3d230dde2c09472e1a71091d25
152 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=alertmanager+template+html', which is flagged as malicious. Additionally, a large number of other URLs are embedded, many pointing to Shopify domains, suggesting a link farm designed to obscure the ultimate destination and potentially distribute malware or conduct phishing.

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/pify?keyword=alertmanager+template+html
    • http://files.madcityparagliding.com/uploads/1/3/2/6/132681438/5167883.pdf
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/powinikowisutozop.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/pixiroveleso.pdf
    • https://cdn.shopify.com/s/files/1/0438/5302/1344/files/evidence_based_research.pdf
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/97296792048.pdf
    • https://cdn.shopify.com/s/files/1/0428/4320/9895/files/bluestack_rooted_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/online_editor_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0440/0329/5382/files/rational_numbers_worksheet_grade_8_cbse.pdf
    • https://cdn.shopify.com/s/files/1/0437/5383/2609/files/time_magazine_cover_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4432/files/dokuxisikexekapidogi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ad9.bin
0481a569776aa6254ed91c9ea4d3bd96173ca0c243ee694876f0be675e9dc41f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD9 5044 bytes
font_01_sfnt_off00007bcc.bin
d18c72721baba95f79b42dee7dbe48a44b2e6cc44832b8451d23acdaffd4b879
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCC 15748 bytes