Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bbc639c092b4bce…

MALICIOUS

PDF

44.2 KB Created: 2020-09-18 14:25:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80d27cf7e1c610f0c9631c7a1e53f32a SHA-1: 7aa73e408d999b90706c1dd3a875edd86c75e63e SHA-256: 8bbc639c092b4bce36eeba4e0da9b20914d8208d393c08f2193820f225a2f7f3
120 Risk Score

Malware Insights

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

The PDF file exhibits malicious behavior by acting as a link farm, containing numerous external links to other PDF documents. One of these links, 'https://ttraff.link/wix?keyword=ludovisi+battle+sarcophagus+artist', is identified as a known malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to lure users to malicious content, likely for further exploitation or credential harvesting.

Heuristics 3

  • 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.
  • 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.link/wix?keyword=ludovisi+battle+sarcophagus+artist
    • http://files.cydwoq-ny.com/uploads/1/3/0/8/130873758/288427.pdf
    • http://vevel.qslowsmoked.com/uploads/1/3/1/4/131406535/5563854.pdf
    • https://cdn.shopify.com/s/files/1/0437/1320/0282/files/infosys_verbal_ability_questions_with_answers_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31670740491.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/gentamicin_induced_nephrotoxicity.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/android_os_9_update.pdf
    • https://cdn.shopify.com/s/files/1/0431/2586/6662/files/gogilafigepoku.pdf
    • https://390077c1-2c9e-4c3e-802a-5b2efbae1334.filesusr.com/ugd/2ca22b_a41fe1f9e92c4508a994dab72123006c.pdf?index=true
    • https://54161898-6d7f-4467-bc0f-50bf4e84a123.filesusr.com/ugd/afe78f_11e508636725470182b819aa06c0fb4e.pdf?index=true
    • https://755a43be-750d-4743-a4fc-e3769ff852a1.filesusr.com/ugd/4ae4db_5b38b18fe6df44a1b142d8b2af1d25c2.pdf?index=true
    • 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_off00006ee6.bin
a28436fed513db6a0e3c5cd8b8905bb258c51cdfff6ddf51ec4cb016a063d750		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE6 5476 bytes
font_01_sfnt_off0000817e.bin
dd8dbd78e760bdf62791b5d2436da40f777139adb5b65edede89d17aae03b176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x817E 10220 bytes

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