PDF malware analysis — malicious · cbe6520852c22da4

MALICIOUS

PDF

94.0 KB Created: 2020-07-31 08:29:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4b75021c20f0450dfd2c2597651bc3a7 SHA-1: c5b38e4902b0aa384cca3b49d4ea2f2962e83092 SHA-256: cbe6520852c22da473aed3fa5f274d49f1a26f12c036322da4e1623443cc6355

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, https://ttraff.ru/pify?keyword=azitromicina+liquido+bula+pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Azitromicina liquido bula pdf', suggesting a lure related to medication information. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious sites, likely for phishing or malware distribution.

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.ru/pify?keyword=azitromicina+liquido+bula+pdf
- http://files.allieherrera.com/uploads/1/3/0/9/130969489/812087.pdf
- http://files.gbpsu.org/uploads/1/3/1/8/131872055/rupeniwuligowodep.pdf
- http://files.thetntmteam.com/uploads/1/3/1/3/131382395/9052969.pdf
- http://files.westchorus.com/uploads/1/3/2/6/132683181/bimamojuzusuw_kazifonefe.pdf
- http://files.nationalwealthcenterclub.com/uploads/1/3/1/3/131383760/fanibigakupaxo_zetasunev.pdf
- https://cdn.shopify.com/s/files/1/0433/0127/3758/files/lujofarenazebuzonejigeb.pdf
- https://cdn.shopify.com/s/files/1/0432/3311/6315/files/93896660424.pdf
- https://cdn.shopify.com/s/files/1/0430/3477/1610/files/wuwozo.pdf
- https://cdn.shopify.com/s/files/1/0431/9041/9616/files/28648211023.pdf
- https://cdn.shopify.com/s/files/1/0433/5907/6510/files/rulasegedosufem.pdf
- https://cdn.shopify.com/s/files/1/0429/5278/6074/files/78875907675.pdf
- https://cdn.shopify.com/s/files/1/0432/6853/8521/files/vobaka.pdf
- https://cdn.shopify.com/s/files/1/0428/1729/0407/files/lulaza.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32686583269.pdf
- https://cdn.shopify.com/s/files/1/0437/5419/3047/files/zufuzediwowaz.pdf
- https://cdn.shopify.com/s/files/1/0438/2654/4802/files/43367247704.pdf
- https://cdn.shopify.com/s/files/1/0429/0487/9267/files/84859155285.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_off00012981.bin` `c1f75a20ad0bdfa41a3566045da49758d99232b34616267d3e318130537c166e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12981	5192 bytes
`font_01_sfnt_off00013aff.bin` `aee36f79b4784fbb540cecf5e0b97ef75182cb4cf8b69ff08ecfc20cca7a7647`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13AFF	15196 bytes

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