Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ecdd4d884b71e1…

MALICIOUS

PDF

47.3 KB Created: 2020-08-10 22:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 495337cac585011f3eab77eccb73f48b SHA-1: 518a46879fd46db8ae1448128da283cdc1ebbf89 SHA-256: 47ecdd4d884b71e1e35a2d10f0807cf520b0ef9a39d3b0da6033753fa96784fe
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that appears to be a lure for medical information, which is then redirected via a malicious link. The presence of a link farm and a malicious redirector suggests an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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=ecocardiograma+normal+valores+pdf
    • http://dopofa.gracederidderphotography.com/uploads/1/3/0/7/130738993/kefej_musuko_takowawagoke_dazex.pdf
    • http://kupadodow.seedsofhope12.com/uploads/1/3/1/1/131164250/4217565.pdf
    • http://kuteked.terrasoulherbs.com/uploads/1/3/2/3/132303035/3356e9c59.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/nukaxuxefarizonorazufa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/29101661042.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/diwuwezise.pdf
    • https://cdn.shopify.com/s/files/1/0437/1080/8216/files/kofetufejamebaripemidowol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/34207351136.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/67454906727.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/480814967.pdf
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/pitudemavebez.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6330/files/23642288624.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7070/files/81870375567.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_off00006c9c.bin
2e6e05faeb0064cb3183b2a1ea64d0c08634e9947b4bc5ca20f31304dbd101b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9C 5492 bytes
font_01_sfnt_off00007f3f.bin
07998436bb220f93bfd03391588c25a53a23d2754b7a328e7b1fab9cfbfd2287		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3F 16384 bytes

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