PDF malware analysis — malicious · 557cca3978688ec6

MALICIOUS

PDF

43.8 KB Created: 2020-08-20 10:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a78d4d5d97c66d22cdef4e17e9a5beda SHA-1: 2f4255af94336968bc3bbc5462967387872d9bca SHA-256: 557cca3978688ec6eda2705a702715541091aa96fcaa39a8ed596282a2501b2e

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=betty+crocker+cookbook+pdf'. This URL is presented within the document body, disguised as a Betty Crocker cookbook PDF, indicating a social engineering lure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the primary attack vector is the malicious URL embedded within the document.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=betty+crocker+cookbook+pdf
- http://files.sscaz.org/uploads/1/3/0/8/130873828/vejilot-xuwat-suxufaborok.pdf
- http://files.sahja.org/uploads/1/3/1/3/131398221/davunu.pdf
- http://files.fullcirclefarming.com/uploads/1/3/1/3/131380308/90d7b3a.pdf
- https://cdn.shopify.com/s/files/1/0430/5806/9655/files/91018779873.pdf
- https://cdn.shopify.com/s/files/1/0431/3622/1341/files/jodirotuw.pdf
- https://cdn.shopify.com/s/files/1/0439/1573/9304/files/28287267092.pdf
- https://cdn.shopify.com/s/files/1/0437/7998/1470/files/allseasonsuniforms_coupon_code.pdf
- https://cdn.shopify.com/s/files/1/0431/9982/4032/files/application_form_template_for_employment.pdf
- https://cdn.shopify.com/s/files/1/0435/3867/7924/files/75070320197.pdf
- https://cdn.shopify.com/s/files/1/0435/2140/9184/files/bbl_fixture.pdf
- https://cdn.shopify.com/s/files/1/0431/8976/4245/files/40055565502.pdf
- https://cdn.shopify.com/s/files/1/0436/8039/9510/files/lonizefiruwe.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000058ea.bin` `4a1c3c87807bb3ca93622bc2f50f526be6939ecf2782d4c0980080e27351b10c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x58EA	4720 bytes
`font_01_sfnt_off00006908.bin` `a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6908	1800 bytes
`font_02_sfnt_off00007195.bin` `4a170e44f7a6b27bdb3a5502177d8fdde49f44f83319e58c68af42b1adff214c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7195	10120 bytes
`font_03_sfnt_off0000943a.bin` `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x943A	4324 bytes

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