Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fa7cb43d9a1e60…

MALICIOUS

PDF

43.1 KB Created: 2020-08-08 14:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4be083c8311b8292837e3e3ab4b955cc SHA-1: 7c5847764287620cd92de2acbe8d5ade240fb569 SHA-256: 54fa7cb43d9a1e609cdc3e3ed070d62803ed7d5fba6ac00396dc12720b7de640
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to "Biogeochemistry book pdf" and the redirector URL, suggesting a lure to a malicious site. The presence of numerous Shopify URLs indicates an attempt to blend malicious links with seemingly benign ones.

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/pify?keyword=biogeochemistry+book+pdf
    • http://files.infinitely-natural.com/uploads/1/3/1/3/131383228/kizaganapo.pdf
    • http://files.teamsalesvictoria.com/uploads/1/3/0/7/130775368/batuzepovis.pdf
    • http://files.geomaticsworkshops.com/uploads/1/3/0/8/130815014/5fba89a846b6e.pdf
    • https://cdn.shopify.com/s/files/1/0430/1720/7971/files/tomajobososivusinipex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/jugovug.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8369/files/bam_to_fastq.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/mupugovafutefaponu.pdf
    • https://cdn.shopify.com/s/files/1/0438/3126/3394/files/17866759505.pdf
    • https://cdn.shopify.com/s/files/1/0435/5581/5583/files/16318361004.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/pifezojelezapatubivu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/pizugamufepiwefetigi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/fasenuzoxewo.pdf
    • https://cdn.shopify.com/s/files/1/0430/5662/7866/files/84487685695.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_off000069c6.bin
a88d334a9e8075e38dbd3574af5bc5393ea7379eacc83fe3733c9e056fd567c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C6 5684 bytes
font_01_sfnt_off00007cff.bin
a7964cf7991b1b372e2a973ed1cd2bcce21e0f550b63e4bac4f5d7116f0d1c3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFF 10152 bytes

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