Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ba5314cc2ed56c…

MALICIOUS

PDF

39.8 KB Created: 2020-08-03 08:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ef7c1fae6ca4fd9c1e73fdf098f5c81 SHA-1: cc65dfcda1924434a9241dbfc3a9181ffab347d3 SHA-256: d5ba5314cc2ed56c1bb3469d1c3b93423e0089ea22682a8f1bbbd80d6970696b
120 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=examples+of+non+vascular+plants'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external PDF links, many hosted on Shopify. The document body text is largely unreadable due to encoding issues but contains the same plant-related lure as the redirector URL. The primary intent appears to be directing users to malicious infrastructure via the ttraff.ru domain.

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.ru/pify?keyword=examples+of+non+vascular+plants
    • http://files.junesablandesigns.com/uploads/1/3/1/4/131406391/kuteg_zaxufeju_fotivexed.pdf
    • http://files.simply-sound.com/uploads/1/3/2/7/132740905/juzobijufaxawe_jekamuzowu_vevobudexov_punaxodinoje.pdf
    • http://files.edinburghtabletennis.com/uploads/1/3/2/6/132695258/zelamerusisi.pdf
    • http://files.linesidephotos-europe.com/uploads/1/3/1/6/131636949/5716912.pdf
    • https://cdn.shopify.com/s/files/1/0433/7287/1832/files/7837003314.pdf
    • https://cdn.shopify.com/s/files/1/0432/3246/0960/files/bifaputuberupeset.pdf
    • https://cdn.shopify.com/s/files/1/0434/4876/2529/files/sinapaforalub.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/rs3_magic_guide.pdf
    • https://cdn.shopify.com/s/files/1/0444/4743/2871/files/ruby_tcp_server.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/jobikunokunaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0999/0043/files/17615242495.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7552/files/nabarufirejavawirumefivu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4946/0636/files/jegomopene.pdf
    • https://cdn.shopify.com/s/files/1/0438/5269/3654/files/3479408006.pdf
    • https://cdn.shopify.com/s/files/1/0436/8151/3622/files/31744898959.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_off00005f91.bin
757d7529a9ec8a093b7c6918a56fcbc0c44ff85b070f177226a67a42634d3671		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F91 5248 bytes
font_01_sfnt_off00007161.bin
6fede982c14d018f2a0c075a49212411f6d5f316b07bcfbbf2190b254996814f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7161 9628 bytes

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