Malicious PDF — malware analysis report

Static analysis result for SHA-256 86a13be1b2a3f4e2…

MALICIOUS

PDF

34.3 KB Created: 2020-08-31 05:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a6703185c0c84daea4034a0e2c89c8f SHA-1: 6de8f50b9b13a6c8e72ddda7fd4d9318ab518606 SHA-256: 86a13be1b2a3f4e2ae7e66dd39cb08e14c94bca3c32fef09fae6a71603b0d41f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used in SEO spam or phishing campaigns to drive traffic to malicious sites. One of the embedded URLs, 'https://ttraff.cc/wix?keyword=lanzetti+bolsas+con+vis%25C3%25B3n', is flagged as belonging to known malicious redirector infrastructure. The document body itself is heavily obfuscated but contains references to the same URLs, suggesting a coordinated effort to lure users to potentially harmful content.

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.cc/wix?keyword=lanzetti+bolsas+con+vis%25C3%25B3n
    • https://cdn.shopify.com/s/files/1/0430/4224/2709/files/katufikemiwonisefojemajo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0673/7053/files/lion_sleeps_tonight_ukulele_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/8584/0036/files/galofiruj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/nesovuzobabilibokasi.pdf
    • https://static.usrfiles.com/ugd/067ecb_073cf8c06d814fbda91089ceb263d953.pdf
    • https://static.usrfiles.com/ugd/cf14a4_04298661253d4eb3ae62d4b734bbe8df.pdf
    • https://static.usrfiles.com/ugd/4bb894_68ab4a7e2d0a417c9b0c39195db668ea.pdf
    • https://cdn.shopify.com/s/files/1/0459/9663/8365/files/32077726754.pdf
    • https://cdn.shopify.com/s/files/1/0435/9746/3714/files/convert_to_word_using_macro.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/fomevek.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/bajofefefewepozemewotixo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5382/5694/files/la_campanella_sheet_music.pdf
    • https://static.usrfiles.com/ugd/73cb9e_ddbc4add7a29459eb1f7e30e47fbeac1.pdf
    • https://static.usrfiles.com/ugd/7ff653_5b284021d026410e980d34c31ca5fa5d.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_off000046e9.bin
569b86012c45329d711bff0229da2e116d596768c35c3201b1d723f582e73f16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46E9 5024 bytes
font_01_sfnt_off000057e2.bin
503b123911b22c612266414d6a229af7fef8f4a3d87a459d59e7d05d2d8138b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57E2 10704 bytes

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