PDF malware analysis — malicious · 3818ccbfbfbfb7ce

MALICIOUS

PDF

53.0 KB Created: 2020-07-30 15:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: af557292d4ec0175da430c8cd9372b60 SHA-1: 4655bd61cb637fdf5809aa072b5bc5f2f8a0cba9 SHA-256: 3818ccbfbfbfb7cec4302f08f924df99ff4bebffb6dbf41ba46b063109f566f5

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'benefits of studying abroad essay pdf'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK strongly indicates a phishing or redirection attempt. The presence of numerous external PDF links, as flagged by PDF_SEO_LINK_FARM, further supports the malicious intent of driving traffic to potentially harmful sites.

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=benefits+of+studying+abroad+essay+pdf
- http://files.schombergcommunityfarm.ca/uploads/1/3/1/3/131380868/c3c31a37f78ec7.pdf
- http://files.larasanusi.com/uploads/1/3/0/8/130873872/sapinibajirudujite.pdf
- http://files.mastergardenerscabarrus.org/uploads/1/3/2/7/132740637/2739720.pdf
- http://files.customer1stelectrics.com/uploads/1/3/1/6/131606360/446283.pdf
- http://files.myorganicaccess.com/uploads/1/3/0/7/130738919/gisaxixe_bevinegu_xuxupunitesojor.pdf
- http://files.larasanusi
- https://cdn.shopify.com/s/files/1/0435/2249/0528/files/99454444126.pdf
- https://cdn.shopify.com/s/files/1/0429/4203/8182/files/58018495599.pdf
- https://cdn.shopify.com/s/files/1/0437/3735/0309/files/jigakakevukifu.pdf
- https://cdn.shopify.com/s/files/1/0429/6038/8259/files/15701305986.pdf
- https://cdn.shopify.com/s/files/1/0432/1142/3902/files/69774731022.pdf
- https://cdn.shopify.com/s/files/1/0433/6526/9669/files/giwexupebunuletojeroke.pdf
- https://cdn.shopify.com/s/files/1/0434/0006/9287/files/wikukexa.pdf
- https://cdn.shopify.com/s/files/1/0428/0808/2598/files/gadobowalapivazomomemojip.pdf
- https://cdn.shopify.com/s/files/1/0429/8558/6849/files/fakizogegelexesira.pdf
- https://cdn.shopify.com/s/files/1/0431/4267/6648/files/mabila.pdf
- https://cdn.shopify.com/s/files/1/0428/7181/6358/files/35911599707.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_off000091ea.bin` `68cc6f7898801ff2359094d8a812c179c5f514e4913aa147dc0c9adb8134390f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91EA	5352 bytes
`font_01_sfnt_off0000a429.bin` `6d6c3d5ed358f3685e19c470de8d357ecdbc13d1dad57c850ff068e8f2035d78`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA429	10216 bytes

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