PDF malware analysis — malicious · 3edcc1a4e51c643e

MALICIOUS

PDF

47.1 KB Created: 2020-07-30 06:45:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 77b08c9d526af0f460b4ccc9a46cba67 SHA-1: 6cdec26f7f18d4c58706001142c56fa4a50b4362 SHA-256: 3edcc1a4e51c643e8ddd2b06878589e67bf202026f90e31b48b1917d1a6ec035

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=accounting+equation+problems+pdf`. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to manipulate search engine results or distribute further malicious content. The document body, though heavily corrupted, contains keywords related to accounting problems, likely serving as 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/pify?keyword=accounting+equation+problems+pdf
- http://files.selindoalpha.com/uploads/1/3/1/3/131379567/nubewarer-lubutatalolape.pdf
- http://files.joysalyers.com/uploads/1/3/1/4/131483029/2101968.pdf
- http://files.yogamuseinc.com/uploads/1/3/1/4/131438203/7aabeadaabc5.pdf
- http://files.yogamuseinc.com/up
- https://cdn.shopify.com/s/files/1/0432/6513/0660/files/10363099630.pdf
- https://cdn.shopify.com/s/files/1/0433/2437/5194/files/xabuv.pdf
- https://cdn.shopify.com/s/files/1/0429/7247/9647/files/dalamobobaw.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jamitaribigonekadori.pdf
- https://cdn.shopify.com/s/files/1/0435/7403/4600/files/kofoninufewogad.pdf
- https://cdn.shopify.com/s/files/1/0433/0032/3478/files/lonezu.pdf
- https://cdn.shopify.com/s/files/1/0428/5143/4659/files/xatesirevubusutaxulomam.pdf
- https://cdn.shopify.com/s/files/1/0431/0705/7825/files/jalujuxurisexu.pdf
- https://cdn.shopify.com/s/files/1/0429/2391/7478/files/69063952189.pdf
- https://cdn.shopify.com/s/files/1/0434/5521/7814/files/46386598128.pdf
- https://cdn.shopify.com/s/files/1/0431/6925/1492/files/34351301900.pdf
- https://cdn.shopify.com/s/files/1/0434/3290/2806/files/fevatuputigagagagepa.pdf
- https://cdn.shopify.com/s/files/1/0427/4647/8759/files/869563537.pdf
- https://cdn.shopify.com/s/files/1/0432/3160/8989/files/86088747554.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_off0000788a.bin` `e6e50cfb173ed07fca4d1b951bf9765ebde2c78021b911263beb299415cc5d89`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x788A	5612 bytes
`font_01_sfnt_off00008b6c.bin` `dff29bccfadc6379fb34f563f85f796cfe3890f217d6385897400a48d72a9a9b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B6C	10568 bytes

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