Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed489755a203e066…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 12:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cf600f58db8c8d045cc28ea5a98e80d SHA-1: 544ef70b920d6260ee861c19e20087ca140f5086 SHA-256: ed489755a203e066b405694c0fd4ac5bbdb33054dca09eb31c2d994baac8c9d2
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 redirector to 'ttraff.com' which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'Apache open office spreadsheet tutorial', suggesting a lure to disguise the malicious intent. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack.

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.com/pify?keyword=apache+open+office+spreadsheet+tutorial
    • http://tetoxuke.firstdesign.org/uploads/1/3/1/4/131406982/xoxedasotubixadigu.pdf
    • http://files.itanecoleman.com/uploads/1/3/1/1/131163540/dilaweketukop-zuwiperovuron-sibedutafuzipol-notanevo.pdf
    • http://files.ofp.cosmo-ufes.org/uploads/1/3/1/8/131856992/tugigajimeg_pelezalufexe_datigojixifure_xitefob.pdf
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/gitijomaravemexowi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/pdf_to_dwg_converter_2020_online.pdf
    • https://cdn.shopify.com/s/files/1/0461/4337/3480/files/skyrim_enchanting_loop_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/lipigixezogidij.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7358/files/cours_anglais_niveau_debutant.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/xedok.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4882/files/dajisafazufipupugo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/5187463056.pdf
    • https://cdn.shopify.com/s/files/1/0436/6771/8309/files/16545040547.pdf
    • https://cdn.shopify.com/s/files/1/0437/2119/5688/files/coleman_tent_air_conditioner.pdf
    • https://cdn.shopify.com/s/files/1/0436/3046/1081/files/sheet_metal_gauge_chart.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_off000061ea.bin
aa4366dae39d970231563ee575d8f78302e9ce85f9fbbdf8b3b478bda742b83f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61EA 5232 bytes
font_01_sfnt_off000073a4.bin
090ff8f8225b45fd1bbc7e49782672a018259ff0d6300715f12a3827c440c6b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A4 10552 bytes

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