Malicious PDF — malware analysis report

Static analysis result for SHA-256 57232558f74aa5eb…

MALICIOUS

PDF

38.8 KB Created: 2020-08-10 07:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8d9cb99285ccb45dad3c25c35ffea7d SHA-1: f7e388242515a045a7f3c2523deeddaf9ba1f09b SHA-256: 57232558f74aa5eb562138c7c2e26b5713c04f02ee57a5a36a70acbbe2e758b2
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Greek mythology quiz pdf' and the malicious URL itself. This suggests a social engineering lure to redirect users to malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=greek+mythology+quiz+pdf
    • http://nukogal.anthonymichaelscatering.com/uploads/1/3/0/8/130814788/671bfec22b8b7.pdf
    • http://jimarutaw.meghanshope.org/uploads/1/3/2/6/132680813/zufuwimubila.pdf
    • http://files.ericbagwellart.com/uploads/1/3/1/8/131859895/7215493.pdf
    • http://files.creightonbrown.com/uploads/1/3/1/4/131483097/rerukoziwupuromugo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8985/files/50991676917.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/xanakofozegavezefedowew.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3701/files/causes_of_water_logging.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1366/files/zosotasitizosinopu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1587610690.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/sexomagupatadeba.pdf
    • https://cdn.shopify.com/s/files/1/0438/0380/3808/files/pofibepikaladesamuzen.pdf
    • https://cdn.shopify.com/s/files/1/0432/7420/7387/files/669482224.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9006/files/witizibexivujirisotozaji.pdf
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/76675381665.pdf
    • https://cdn.shopify.com/s/files/1/0435/0846/5828/files/rabojuwog.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0509/files/aladdin_and_the_magic_lamp_short_story.pdf
    • https://cdn.shopify.com/s/files/1/0440/6686/5302/files/motudomezoxavug.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b70.bin
4d1d78a011ebc435ea8b310cb10dad632646ee283a3f0e9174102bde9bbdcd41
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B70 5216 bytes
font_01_sfnt_off00005d41.bin
0d652a798bee5c2162a3f8ad87e64da2bcb12b92b686533e736989331d686743
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D41 10264 bytes
font_02_sfnt_off00008031.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8031 4324 bytes