PDF malware analysis — malicious · 77c3b45ee14eba4e

MALICIOUS

PDF

42.8 KB Created: 2020-08-09 06:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5bd5efa06908b7ffd3905dec4e72d423 SHA-1: f4c8c3fc21ad0593afe0356a4b84429da6e966cc SHA-256: 77c3b45ee14eba4e73fec266eda5de843285fac8b9b7f547ba0c20b2d347d3da

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a lure to external content. The embedded URL in the document body points to a redirector, which is a common technique for delivering malicious payloads or phishing pages. The presence of numerous external PDF links suggests an attempt to manipulate search engine results or distribute content through a link farm.

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=distinction+between+assessment+for+learning+and+assessment+of+learning+pdf
- http://files.kunalsen.com/uploads/1/3/1/4/131437736/kojam.pdf
- http://files.ldamontessorimaterials.com/uploads/1/3/1/4/131437018/witipira.pdf
- http://jilobipi.cluttermastermind.com/uploads/1/3/1/0/131070420/7035759.pdf
- http://files.irentphilippines.com/uploads/1/3/1/8/131872273/131aaa5a5.pdf
- https://cdn.shopify.com/s/files/1/0435/4542/8122/files/5775567076.pdf
- https://cdn.shopify.com/s/files/1/0431/2639/0946/files/tijijolelezaf.pdf
- https://cdn.shopify.com/s/files/1/0437/1700/1368/files/distressed_debt_analysis_stephen_moyer.pdf
- https://cdn.shopify.com/s/files/1/0432/3262/4797/files/snake_game_cool_math.pdf
- https://cdn.shopify.com/s/files/1/0434/3624/5142/files/teseliz.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/4077026649.pdf
- https://cdn.shopify.com/s/files/1/0435/9480/9512/files/vodasesasura.pdf
- https://cdn.shopify.com/s/files/1/0434/3254/2369/files/bbm_syllabus_mysore_university.pdf
- https://cdn.shopify.com/s/files/1/0432/2027/1264/files/38648548926.pdf
- https://cdn.shopify.com/s/files/1/0431/5106/5243/files/asus_vg248qe_driver.pdf
- https://cdn.shopify.com/s/files/1/0445/4852/2143/files/romun.pdf
- https://cdn.shopify.com/s/files/1/0431/6761/3087/files/kizafawubugawulis.pdf
- https://cdn.shopify.com/s/files/1/0430/0334/7097/files/nawijez.pdf
- https://cdn.shopify.com/s/files/1/0435/4909/8148/files/pogurabozevewuvemozezafu.pdf
- https://cdn.shopify.com/s/files/1/0429/5242/5631/files/mathematics_book.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_off0000680c.bin` `4093afb86746b213b605a6dad763db10963c146b61a52749524cc104a28cae7b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x680C	5708 bytes
`font_01_sfnt_off00007b77.bin` `07028169845cae3a718de95ddf3935eaf6dcc2542d11f629a8a64fd0a3e2528b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B77	9940 bytes

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