PDF malware analysis — malicious · 8ac38e55c22ab5f9

MALICIOUS

PDF

72.8 KB Created: 2020-08-03 23:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 500297cc4c72289accb15adce93f0da9 SHA-1: a89674b244acf85ff1c62169a6216c9bd0e0ee0a SHA-256: 8ac38e55c22ab5f923739c1a6d1bd8e94555da28f63eb1e9de97b7f5a5598b76

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic indicating it links to a known malicious redirector, specifically `https://ttraff.ru/pify?keyword=abraham+maslow+theory+of+learning+pdf`. It also contains a PDF link farm heuristic, with many links pointing to Shopify domains, one of which is `https://cdn.shopify.com/s/files/1/0429/8512/8090/files/3711405936.pdf`. The document body, though heavily obfuscated, contains the same lure text and the malicious URL, suggesting the primary purpose is to redirect users to malicious content.

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=abraham+maslow+theory+of+learning+pdf
- http://files.everywhere2everywhere.org/uploads/1/3/1/6/131636834/melik.pdf
- http://files.coratoloassociatesllc.com/uploads/1/3/2/6/132696580/d5f45e5.pdf
- http://files.misplacedolls.com/uploads/1/3/0/7/130775506/giridigododubi.pdf
- http://files.partycentralmd.com/uploads/1/3/1/1/131164275/3bae59.pdf
- https://cdn.shopify.com/s/files/1/0429/8512/8090/files/3711405936.pdf
- https://cdn.shopify.com/s/files/1/0434/6406/5174/files/kadonuzema.pdf
- https://cdn.shopify.com/s/files/1/0432/3095/3630/files/fodidu.pdf
- https://cdn.shopify.com/s/files/1/0435/9726/7112/files/mabokidalowala.pdf
- https://cdn.shopify.com/s/files/1/0440/0765/3526/files/bezonuzimeropa.pdf
- https://cdn.shopify.com/s/files/1/0432/8367/7339/files/67559187557.pdf
- https://cdn.shopify.com/s/files/1/0427/5847/1846/files/labozokutetelewagenak.pdf
- https://cdn.shopify.com/s/files/1/0431/2737/3986/files/69316220119.pdf
- https://cdn.shopify.com/s/files/1/0432/2911/8627/files/puntos_de_partida_9th_edition_answer_key.pdf
- https://cdn.shopify.com/s/files/1/0438/4351/8629/files/mikedibinarewinemikav.pdf
- https://cdn.shopify.com/s/files/1/0430/3428/0090/files/jalewaza.pdf
- https://cdn.shopify.com/s/files/1/0429/6271/4773/files/lokevitovitofuroge.pdf
- https://cdn.shopify.com/s/files/1/0429/1300/5724/files/86132101214.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_off0000dd5c.bin` `1355bef3d549f8770f6b0b484c2e2556980b968a5321e7bc06d8f9dc6d306e24`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD5C	5776 bytes
`font_01_sfnt_off0000f0f4.bin` `8876bacc1781e70d0ed197ad3f6cab2bc26851a5dbdd849fc347fd950cb1095d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0F4	10900 bytes

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