PDF malware analysis — malicious · 84945140e827fe7d

MALICIOUS

PDF

38.2 KB Created: 2020-07-14 22:33:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 570c9e8cc1172d345a0c4ee26c297318 SHA-1: 8602a83c3e0a9c44a8badef1a1c03872721bfbac SHA-256: 84945140e827fe7d42733f808b95d51a06951e4f32dcdb0d1308ba4e632d01bf

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. It also fires for PDF_SEO_LINK_FARM, suggesting a large number of outbound links. The primary malicious IOC is the redirector URL, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains text related to grammar exercises, likely a lure.

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/wb?keyword=present%20simple%20tense%20and%20present%20continuous%20tense%20exercise%20pdf
- http://files.reading2reading.com/uploads/1/3/0/9/130969555/49253ecafb.pdf
- http://files.jeeperzoutpost.com/uploads/1/3/0/9/130968906/pukesimane_mumodonidu.pdf
- http://files.animalecologylab.org/uploads/1/3/1/6/131607683/popategajuf_xanodexafavum.pdf
- http://files.teacherbehn.com/uploads/1/3/0/7/130776081/jojewujabejepolipa.pdf
- http://files.teacherbehn.com/uploads/1/3/0/7/130776081/jojewujabejepo
- https://rafopez.files.wordpress.com/2020/06/98898466715.pdf
- https://gudumik.files.wordpress.com/2020/06/jifezezimevokinakawidal.pdf
- https://vusuletameta.files.wordpress.com/2020/07/jiwigupon.pdf
- https://boruporo.files.wordpress.com/2020/07/lofokibivupafopitilafos.pdf
- https://xofinositum.files.wordpress.com/2020/07/17866785950.pdf
- https://suzoxafa.files.wordpress.com/2020/06/60140324264.pdf
- https://cdn.shopify.com/s/files/1/0429/5986/3961/files/28229767844.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/571475918.pdf
- https://cdn.shopify.com/s/files/1/0431/5630/8123/files/faxivutodowujed.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fikikotiv.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/woburorofinuxup.pdf
- https://cdn.shopify.com/s/files/1/0430/7186/4993/files/rapobusetuzifeke.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_off000058dd.bin` `3712b1a13086b712f77b95ef6c45e8056fbf9474fb84f548e2a50c6b518b059b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x58DD	5252 bytes
`font_01_sfnt_off00006a90.bin` `c5b7ee8352f205a8fde304131556a7caebbc3eacf879aaa19a622eda83c02b00`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A90	9540 bytes

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