PDF malware analysis — malicious · ee63bd7e89f4e7e6

MALICIOUS

PDF

58.2 KB Created: 2020-08-09 12:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a2f9dffc27219c97bb0138502959d974 SHA-1: 38428cb9e9891c4ab526caf26008ee4e18910628 SHA-256: ee63bd7e89f4e7e613dbcb3162a661810b4ce5239ebea43954695a835dfaa34e

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a link for downloading English stories. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm designed to improve search engine ranking and potentially distribute malicious content. The ML classifier also strongly indicates maliciousness.

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.com/pify?keyword=english+small+stories+pdf+download
- http://files.fullpotentialfitness.net/uploads/1/3/2/6/132695572/wawisimabipudiz.pdf
- http://files.ashma.studio/uploads/1/3/1/3/131398236/dimifipobosasibas.pdf
- http://files.artful-living-in.com/uploads/1/3/1/3/131378816/8fcc1e98850904.pdf
- http://files.okpoets.org/uploads/1/3/2/7/132740458/165136170a6ba25.pdf
- http://files.kehrey.com/uploads/1/3/1/6/131637150/demupoz-vifomililorumev-zikofepinagaf-wagovuniforodo.pdf
- https://cdn.shopify.com/s/files/1/0431/0014/3777/files/83402921883.pdf
- https://cdn.shopify.com/s/files/1/0429/8942/0695/files/30345973694.pdf
- https://cdn.shopify.com/s/files/1/0440/8662/4406/files/nuxajopeporejomotibi.pdf
- https://cdn.shopify.com/s/files/1/0433/3781/0075/files/58720033087.pdf
- https://cdn.shopify.com/s/files/1/0435/3038/7607/files/fazinugebuwajusaganil.pdf
- https://cdn.shopify.com/s/files/1/0434/4836/9309/files/50898002574.pdf
- https://cdn.shopify.com/s/files/1/0432/3845/7501/files/fusudaxikogudomelevure.pdf
- https://cdn.shopify.com/s/files/1/0428/5402/3327/files/xikadiwu.pdf
- https://cdn.shopify.com/s/files/1/0432/8475/8696/files/vevapago.pdf
- https://cdn.shopify.com/s/files/1/0430/0577/1929/files/995835601.pdf
- https://cdn.shopify.com/s/files/1/0429/7539/5993/files/n_vidia_680.pdf
- https://cdn.shopify.com/s/files/1/0432/6585/1542/files/adverb_of_frequency_quiz.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_off0000a5f9.bin` `6ee3a95c00331f2aee4f1d0db86090b94ff1208da7bba02c2384ab3a92cdd5f6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA5F9	5504 bytes
`font_01_sfnt_off0000b89c.bin` `4a5cedf2f16bdf33293a2e2384802e1d72588ef97a3db49dea2a3e6808e4ba4c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB89C	10308 bytes

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