PDF malware analysis — malicious · e8df7fa55b5c624a

MALICIOUS

PDF

45.2 KB Created: 2020-08-15 05:00:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: db87aadbb56c8a1de334f6e3536ca2f7 SHA-1: 4c9ff224657339fcd7291e1a449af3318a18f1a3 SHA-256: e8df7fa55b5c624a08fc0c123ae902bceb38b4cbe0d1b367dde044d8d086040d

140 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a lure for 'Skype for mac' and a critical heuristic firing indicates a malicious redirector link. This link, 'https://ttraff.cc/pify?keyword=skype+for+mac+filehippo', is designed to redirect users to malicious infrastructure. Additionally, the PDF contains a large number of embedded links, many hosted on shopify.com, which is characteristic of SEO link farm abuse for distributing malicious content. The document body, though heavily obfuscated, contains the same lure text and the malicious URL.

Heuristics 4

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
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=skype+for+mac+filehippo
- http://files.ourhandmadelife.com/uploads/1/3/1/6/131607404/523b38d.pdf
- https://cdn.shopify.com/s/files/1/0429/8126/1466/files/openssl_sign_certificate_with_ca.pdf
- https://cdn.shopify.com/s/files/1/0430/7379/8298/files/72043826013.pdf
- https://cdn.shopify.com/s/files/1/0432/2466/2173/files/autosomes_and_sex_chromosomes.pdf
- https://cdn.shopify.com/s/files/1/0430/1769/9477/files/55378763690.pdf
- https://cdn.shopify.com/s/files/1/0430/6747/4087/files/banking_services_chronicle_magazine_november_2020.pdf
- https://cdn.shopify.com/s/files/1/0430/2172/9955/files/creative_process_in_gestalt_therapy.pdf
- https://cdn.shopify.com/s/files/1/0441/3915/1512/files/81306352892.pdf
- https://cdn.shopify.com/s/files/1/0431/5794/6519/files/14275132513.pdf
- https://cdn.shopify.com/s/files/1/0433/5036/0232/files/fobowexasafiwatusubog.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96258555683.pdf
- https://cdn.shopify.com/s/files/1/0430/6986/6133/files/lineneluragefolikupumi.pdf
- https://cdn.shopify.com/s/files/1/0428/2440/1063/files/cursive_alphabet_chart_with_directional_arrows.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_off0000734d.bin` `7df2ec5471f7882af78663342dfb275f770ada98dcd91b77ab0b770ed6b3d3c7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x734D	5348 bytes
`font_01_sfnt_off00008560.bin` `fe4cb36d8146f16e8e50dfd67e7f62c180f1059424e97887ec4fe115591578dc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8560	10308 bytes

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