Malicious PDF — malware analysis report

Static analysis result for SHA-256 a65a0ff00ff4e4e3…

MALICIOUS

PDF

32.7 KB Created: 2020-08-08 15:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a1e01e868868979ab91384af3526d14 SHA-1: 29c74a45932169e776b3607a841f53d7603d3d91 SHA-256: a65a0ff00ff4e4e3e436bc91f94ad4edaba5f6443ce47fd2197bd58500f340bd
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirector strategy. The primary link, 'https://ttraff.com/pify?keyword=building+construction+illustrated+free+pdf+download', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to download content. No scripts were extracted from this sample.

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.com/pify?keyword=building+construction+illustrated+free+pdf+download
    • http://files.ecosystemarts.org/uploads/1/3/0/8/130874474/pamujoduwut-melixanogob-toguwapi.pdf
    • http://vuwum.therosievida.com/uploads/1/3/2/6/132695569/f5cc5850bf0dd.pdf
    • http://files.offthefrontporch.com/uploads/1/3/1/4/131406258/giwome.pdf
    • http://jonowa.ottercontrol.com/uploads/1/3/1/4/131437987/tiwiroximajiweme.pdf
    • https://cdn.shopify.com/s/files/1/0437/2761/8209/files/bawiliwugojixuluweva.pdf
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/biology_book_by_miller_and_levine.pdf
    • https://cdn.shopify.com/s/files/1/0432/7732/0348/files/28051598964.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/english_synonyms_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/8978/7048/files/rca_tube_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/55183075.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/490977654.pdf
    • https://cdn.shopify.com/s/files/1/0437/5547/1002/files/selapufibolenugob.pdf
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/29699083200.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/chemistry_notes_on_acids_bases_and_salts.pdf
    • https://cdn.shopify.com/s/files/1/0437/6854/5442/files/pujivejugabufuvewowawu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2478/4292/files/16186215027.pdf
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/70544843214.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_off000045aa.bin
9fad8211e026a4458a41b454181f7f30da3f216dfe4be51e59a0df377aac70bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x45AA 5464 bytes
font_01_sfnt_off00005866.bin
69f0ce9d5d941828c9e77cb87b5c0ec6b6991d955650e8ab7c5d14f14ab3aa1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5866 8600 bytes