PDF malware analysis — malicious · 23c23795188a29a8

MALICIOUS

PDF

44.0 KB Created: 2020-08-18 19:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 45f40d18f499050f6fee6a3aca452897 SHA-1: 9b4e090def0eaf6ef0d36f15e48c94235a1e0f5d SHA-256: 23c23795188a29a8dde236c467a402f2b992c29a47c9bff0e428992c4dd4fc5e

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'the impossible quiz answers level 17' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many pointing to Shopify, likely to obscure the malicious redirector. The primary malicious IOC is the redirector URL.

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=the+impossible+quiz+answers+level+17
- http://files.gahanritchie.com/uploads/1/3/1/8/131856883/8286080.pdf
- http://pibiwa.unifynb.com/uploads/1/3/0/8/130874493/safede_xupiz_guletexujam.pdf
- http://files.ezstaged.com/uploads/1/3/0/7/130776676/c08a77.pdf
- https://cdn.shopify.com/s/files/1/0431/8098/2436/files/29631584900.pdf
- https://cdn.shopify.com/s/files/1/0428/0628/0355/files/five_characteristics_of_anglo_saxon_literature.pdf
- https://cdn.shopify.com/s/files/1/0431/0922/0503/files/25648852980.pdf
- https://cdn.shopify.com/s/files/1/0437/5173/5448/files/53192696919.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.pdf
- https://cdn.shopify.com/s/files/1/0429/1405/4300/files/classification_of_matter_by_composition_worksheet.pdf
- https://cdn.shopify.com/s/files/1/0430/5145/0519/files/gejonasenogafumozusisiv.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bugasodaliza.pdf
- https://cdn.shopify.com/s/files/1/0440/8714/8709/files/22428288773.pdf
- https://cdn.shopify.com/s/files/1/0429/2381/9175/files/the_story_of_babar_the_little_elephant.pdf
- https://cdn.shopify.com/s/files/1/0429/9938/2170/files/71373896944.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005fd5.bin` `d4ee84b79b08fbe2274dce2a61d13fa7776b4179f5a66551632e9119b562538f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FD5	5412 bytes
`font_01_sfnt_off0000722e.bin` `aa5e2d52461182956b5e476f12890cd3e0cad5088789fa4d14538f42dcfb1737`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x722E	10288 bytes
`font_02_sfnt_off0000952f.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x952F	4324 bytes

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