PDF malware analysis — malicious · 5038f08b3669933f

MALICIOUS

PDF

52.2 KB Created: 2020-07-18 23:09:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a4cfa4128636b5b8174aacb0f4b7b00c SHA-1: b92ac6914ba2fe74b777c1cf221488eec2e963a3 SHA-256: 5038f08b3669933fe1c08a7ff4c0f5cf1789d08924f03b0f224a947a1c8779c7

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. This link is presented within the document body as 'Keurig k200 cleaning instructions', indicating a social engineering lure. The PDF also contains a link farm heuristic, suggesting a broad attempt to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=keurig+k200+cleaning+instructions
- http://files.nanba-ryu.com/uploads/1/3/0/8/130874240/bexukamij-regotazilada-kakisuxaniri.pdf
- http://files.versatile.pub/uploads/1/3/0/7/130740143/1ce14f.pdf
- http://files.kitosbiotech.org/uploads/1/3/0/7/130738830/jorudowupem.pdf
- https://dodibakek
- https://venefivim.files.wordpress.com/2020/07/89350876965.pdf
- https://nediwob476369769.files.wordpress.com/2020/06/gunemepekijalozelokabuteb.pdf
- https://jewifafubod.files.wordpress.com/2020/07/rupoluxa.pdf
- https://kuwimiwujapa.files.wordpress.com/2020/07/44423427810.pdf
- https://jidibabeja.files.wordpress.com/2020/06/suwasagujosinifufete.pdf
- https://dodibakekoj.files.wordpress.com/2020/07/45664632317.pdf
- https://vimasevepu.files.wordpress.com/2020/07/32613245315.pdf
- https://cdn.shopify.com/s/files/1/0429/7873/8335/files/fefovolikajulitujifosuj.pdf
- https://cdn.shopify.com/s/files/1/0432/0670/5311/files/74381353990.pdf
- https://cdn.shopify.com/s/files/1/0428/9291/8937/files/lotupumazebavunig.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gigogew.pdf
- https://cdn.shopify.com/s/files/1/0431/1570/8580/files/siwuni.pdf
- https://cdn.shopify.com/s/files/1/0430/8025/3593/files/40145060021.pdf
- https://cdn.shopify.com/s/files/1/0427/3173/3159/files/97482903787.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000794a.bin` `30bcff30e738df0f6da068ca3cdf774d6f7b7c7b037011d2ac357be89ca45378`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x794A	5156 bytes
`font_01_sfnt_off00008ae2.bin` `b914b0df3071af49c28c65845af07e58a07427df6af05ab970e32b9733c53b4f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AE2	10156 bytes
`font_02_sfnt_off0000add3.bin` `028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xADD3	16312 bytes

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