Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82211e38cfdf51f…

MALICIOUS

PDF

41.4 KB Created: 2020-08-30 14:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0d5d9d78e9d526ba0c68b5745767b90 SHA-1: e28eac31ee97e98181c62b813ab8d3a7d9489456 SHA-256: e82211e38cfdf51f16984a21e5029e34ad59b0c42e91824393cc935892e40e12
130 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. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. The presence of urgency language further supports a social engineering attack pattern. The primary malicious URL identified is https://ttraff.cc/wix?keyword=como+converter+pdf+para+autocad.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=como+converter+pdf+para+autocad
    • https://cdn.shopify.com/s/files/1/0430/6599/9511/files/gta_seven_sins.pdf
    • https://cdn.shopify.com/s/files/1/0429/8440/7199/files/easy_blues_piano_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/1221/7241/files/black_dwarf_comics.pdf
    • https://cdn.shopify.com/s/files/1/0431/6607/2994/files/wasixijenutozunusinefi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/konenudufaroxuzus.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9643/files/98514516949.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/juretu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6573/5328/files/84374092962.pdf
    • https://cdn.shopify.com/s/files/1/0455/6580/4709/files/vuweniboxeditosez.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/sap_abap_certification_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/32619518877.pdf
    • https://static.usrfiles.com/ugd/930050_31bdb57cf4ff4a2e8660790c65352557.pdf
    • https://static.usrfiles.com/ugd/253000_18f325b553444ff18494d621d9a93346.pdf
    • https://static.usrfiles.com/ugd/6924eb_2a506997d1ed48b089ecc75891866b3e.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_off000064ce.bin
7122c636def11e692f7afd93e6d28ebf0dedc90fd8ff014b3be7573940c80262		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CE 5056 bytes
font_01_sfnt_off000075e8.bin
f514d7287d00bc974db58f4e1b5f589f3450456884eb9c313ecc79c56a311264		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 10080 bytes

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