Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c0ea5f191d440e…

MALICIOUS

PDF

38.6 KB Created: 2020-08-31 07:20:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2278132077877e1c7d0b9ec864867e7b SHA-1: 82d60166298c21cf7ed7bd3257d1d011278daba9 SHA-256: e6c0ea5f191d440e0a30b612fd6876dbd81e3b9831c2a7d22163dbe8c0f32bfd
154 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious. It contains a large number of embedded URLs, forming a link farm. One of these URLs, 'https://ttraff.cc/wix?keyword=mhw+goldener+wyverianer+druck', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to lure users to malicious sites, likely for further exploitation or credential harvesting.

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=mhw+goldener+wyverianer+druck
    • https://static.usrfiles.com/ugd/225520_7a683daa186c49bf94f5204e3c2f3ce5.pdf
    • https://static.usrfiles.com/ugd/b8c837_196561d7a576476882f04beb75d6135d.pdf
    • https://static.usrfiles.com/ugd/f80014_388f06c49dc14f72930fe47f9bab5804.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f43e0b4ff0844e89acb6ffad7a03ce9.pdf
    • https://static.usrfiles.com/ugd/6924eb_afdfb5b5d7ff4a6693cd555663600c3b.pdf
    • https://cdn.shopify.com/s/files/1/0433/0828/6105/files/mla_reference_sheet_example.pdf
    • https://cdn.shopify.com/s/files/1/0438/8651/0232/files/spongebob_scaredy_pants_full_episode.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/bobina_de_tesla_casera.pdf
    • https://static.usrfiles.com/ugd/b8c837_4938c1590ed8410485e94e545702ccb4.pdf
    • https://static.usrfiles.com/ugd/defcb2_aeaea55f56614a1d8a8ed43438685c6b.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8709/4179/files/wigawaziwoxetafuwejareza.pdf
    • https://cdn.shopify.com/s/files/1/0435/8235/7663/files/bulagifabesarex.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_off00005949.bin
d98d0279243cafe7012dd010fcf893a5f4e0dab8470ad00998ccad54de547cf5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5949 5344 bytes
font_01_sfnt_off00006b8e.bin
07477486f73eab91190e5701b6809b354c6bf98580c005feb029b0a26e76b3e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8E 9952 bytes