PDF malware analysis — malicious · 8d98dee6aaf50f74

MALICIOUS

PDF

40.3 KB Created: 2020-08-26 04:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e24901fb8c926a16f3e2e67fcc20d35d SHA-1: 0d95593d0d4b62c302186bb471538f7bf0587adc SHA-256: 8d98dee6aaf50f7472ab5762c10d21c8ec9960f3e52f84dc6910fa0cc9ef16f4

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector, and another detected a link farm structure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/pify?keyword=pirates+of+the+caribbean+sea+of+wrath', which is also listed as a malicious redirector. The primary purpose appears to be directing users to potentially harmful external content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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.link/pify?keyword=pirates+of+the+caribbean+sea+of+wrath
- http://files.academiadeballetallegro.com/uploads/1/3/1/4/131437308/wakatorudegarugulo.pdf
- http://files.stmattsschoolcampbellsport.com/uploads/1/3/1/6/131636946/6277380.pdf
- https://cdn.shopify.com/s/files/1/0430/1769/9477/files/fabuzasewibisegole.pdf
- https://cdn.shopify.com/s/files/1/0434/7281/4245/files/96256235894.pdf
- https://cdn.shopify.com/s/files/1/0454/3496/2088/files/55335746452.pdf
- https://cdn.shopify.com/s/files/1/0435/3831/7471/files/forrester_report_on_artificial_intelligence.pdf
- https://cdn.shopify.com/s/files/1/0439/1396/9819/files/22553286287.pdf
- https://cdn.shopify.com/s/files/1/0435/9471/1203/files/caterpillar_diesel_generator_manual.pdf
- https://cdn.shopify.com/s/files/1/0427/7298/8071/files/xiperariduleg.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/
- https://cdn.shopify.com/s/files/1/0439/1396/9819/files/22553

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005fb1.bin` `0afbe9f2686dca45525083773e336e088c8b473a996794ce88e27bd2d17f8d37`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FB1	5172 bytes
`font_01_sfnt_off00007153.bin` `3e06ac06c4204971ef9a95c25fc90ee27567fda048a52e81434150c1be3ae7f7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7153	10292 bytes

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