Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0370e45667572e7…

MALICIOUS

PDF

46.2 KB Created: 2020-09-01 06:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e414fd90426ae60d6a848e5d2f49fe6e SHA-1: 0ad8fd1c9e986595406e1b7c9e05c88e381de526 SHA-256: d0370e45667572e75d15fb294d56990d545aa6ea69153490a698a17448f30890
154 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=epic+seven+catalyst+farming+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to this URL and other benign-looking PDF links, suggesting a lure to a malicious site. 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/pify?keyword=epic+seven+catalyst+farming+guide
    • https://static.usrfiles.com/ugd/e7e4a0_cb657bbb81404baabbcc6807adac30a4.pdf
    • https://static.usrfiles.com/ugd/1f5cef_7ce93598d48d4a09b85f9638b45bad50.pdf
    • https://static.usrfiles.com/ugd/353d00_2ba0d4a065f04df1966b0fb273dff56c.pdf
    • https://static.usrfiles.com/ugd/66c878_8ec9caa704324cca866b221ecbb61ce2.pdf
    • https://static.usrfiles.com/ugd/0df15e_446ddee7628647a291babac1b41cdc42.pdf
    • https://static.usrfiles.com/ugd/b8c837_7158018ce86b44ffa626a76abc9a9b06.pdf
    • https://static.usrfiles.com/ugd/756799_c3df16d37c7647eeaceac2860324b0d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ec6fa03b22d487ca22ac3d8f9f580e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_def380d5552e418d82c97d6d4a3e69fa.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8951/files/zewokorofezotuguginejiguv.pdf
    • https://cdn.shopify.com/s/files/1/0433/4757/4949/files/latenaronijapopepib.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/41729532820.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/autoplay_menu_builder_templates.pdf
    • https://cdn.shopify.com/s/files/1/0434/7366/6213/files/online_payroll_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0428/6405/0332/files/fazugamulazi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1733/files/allianz_global_assistance_canada_claim_form.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_off0000724f.bin
3b193586f93aac1941521c92c0c7b64e9a7aa1159a9959bf724f6a2a2e5f4ddb
pdf-font-stream PDF embedded font (sfnt) at offset 0x724F 5596 bytes
font_01_sfnt_off0000855a.bin
d6af0c6b64dbe881f48c3e6a74e93ed4902ed8fa4160993e06a13dd58c1a5cb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x855A 11560 bytes