PDF malware analysis — malicious · e19cd83faa66ecc3

MALICIOUS

PDF

45.5 KB Created: 2020-07-22 20:32:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6d2e24bf541662181bf4bc262486fd40 SHA-1: a082a59ea9504b36aa25c4d056186d043344640d SHA-256: e19cd83faa66ecc382ba9127abcc862a578da7e3234ee925e465ee48f7add26f

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary redirect URL is 'https://ttraff.com/pify?keyword=bncc+ensino+fundamental+pdf+ciencias+da+natureza', which likely leads to a malicious site. Another heuristic identified a link farm structure, with many links pointing to Shopify domains hosting PDF files. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=bncc+ensino+fundamental+pdf+ciencias+da+natureza
- http://files.naughtyboysproduction.com/uploads/1/3/1/4/131406173/panodirisi.pdf
- http://files.jeanlucvilmouth.com/uploads/1/3/1/4/131437139/e40d4dc7.pdf
- http://files.crearanch.com/uploads/1/3/1/4/131407647/8196800.pdf
- http://files.crearanch.com/uploads/1/3/1/4/13140764
- https://cdn.shopify.com/s/files/1/0429/5622/6716/files/43237467806.pdf
- https://cdn.shopify.com/s/files/1/0432/6352/5026/files/49006156283.pdf
- https://cdn.shopify.com/s/files/1/0433/9341/7366/files/91887551876.pdf
- https://cdn.shopify.com/s/files/1/0434/6137/8212/files/84215430878.pdf
- https://cdn.shopify.com/s/files/1/0433/0595/9574/files/30220942767.pdf
- https://vonemimul.files.wordpress.com/2020/06/tonetijomebejusidus.pdf
- https://pogunuji.files.wordpress.com/2020/07/80630621127.pdf
- https://mopebafuju.files.wordpress.com/2020/07/17288577771.pdf
- https://wudosuwan.files.wordpress.com/2020/06/27711954532.pdf
- https://cdn.shopify.com/s/files/1/0431/4267/6648/files/43120876262.pdf
- https://cdn.shopify.com/s/files/1/0436/9989/6475/files/84444075268.pdf
- https://cdn.shopify.com/s/files/1/0434/5161/3334/files/noxedenotesusi.pdf
- https://cdn.shopify.com/s/files/1/0434/6318/0438/files/sugegevigopanosivuzapan.pdf
- https://cdn.shopify.com/s/files/1/0428/9848/9503/files/firefu.pdf
- https://cdn.shopify.com/s/files/1/0431/5650/4744/files/jowuzulizorerogege.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000748d.bin` `30406592caf6061d4d85dc6dc365d31cd7b622e659f65d9f51b9f179f069c7a1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x748D	5280 bytes
`font_01_sfnt_off00008665.bin` `839bb9de2575c168ca46a0c9e57c05082f96831086bc665b2878d2db578f54a7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8665	9916 bytes

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