Malicious PDF — malware analysis report

Static analysis result for SHA-256 e195a028ec80f698…

MALICIOUS

PDF

72.3 KB Created: 2020-08-19 03:48:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a38f53cc393429b59397390f5d8c2b80 SHA-1: fd51b3c62e9d569d846e92574ed829c71011bbe7 SHA-256: e195a028ec80f6987c011aed61ec6baaa1847b5f061a5352a28838a0484869cf
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=therapy+worksheets+for+grief', suggesting a lure to a malicious site. The presence of numerous PDF links, including to Shopify domains, indicates a link farm strategy, likely for SEO poisoning or to host further malicious content.

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=therapy+worksheets+for+grief
    • http://files.inspiredbyyoujewelry.net/uploads/1/3/2/6/132682051/7ed8586b11.pdf
    • http://files.wapropestcontrol.com/uploads/1/3/0/8/130873872/timenus.pdf
    • http://bejoxupe.auburnhighfootball.com/uploads/1/3/1/4/131407440/ec4ceb51e.pdf
    • http://files.servastaiwan.org/uploads/1/3/1/3/131398333/walivupipevawi_xejinopeguvuni.pdf
    • http://files.vision117.com/uploads/1/3/2/7/132710797/vawixixanon.pdf
    • http://www.ther
    • https://cdn.shopify.com/s/files/1/0438/4528/8093/files/goodfellas_movie_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/37647815786.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/xukujogixofipojebov.pdf
    • https://cdn.shopify.com/s/files/1/0440/2518/4421/files/xuzonefuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/gate_2020_question_paper_mechanical_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/2606/9157/files/43687230761.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/wimagunobubofedoxakajup.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/melavaxurewij.pdf
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/wokutijigufugafumetaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0437/0842/files/noida_map_sector_wise.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_off0000dda0.bin
dc753b2c35c68b8b439482a8ffbbbf87ee74a887b7cd5bf1bebf3b40818389fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA0 5340 bytes
font_01_sfnt_off0000efe1.bin
1e18e34edcbe3ce56eccc2884ace1f6acc6f23c0f5286d971c01b8ee465c189c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE1 10596 bytes

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