PDF malware analysis — malicious · d63f22b3948a2a39

MALICIOUS

PDF

41.1 KB Created: 2020-08-18 21:40:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d9a4e424addc1ffc5d35595cef6abe63 SHA-1: 6d198978a3989a5e2af7e3bf919421964e4dd49a SHA-256: d63f22b3948a2a3901a312560c5d1a099ebd8f036a5423cb1b85f98c95103fbb

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links, many pointing to a redirector service. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to attract search engine traffic and potentially lure users to malicious content. The primary attack vector appears to be the exploitation of users clicking on these numerous links.

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.cc/pify?keyword=android+binder+native+example
- http://files.kesselaarbv.com/uploads/1/3/1/1/131164032/4528237.pdf
- https://cdn.shopify.com/s/files/1/0432/2977/3982/files/fopedejuxonenonib.pdf
- https://cdn.shopify.com/s/files/1/0433/3246/8890/files/61189391625.pdf
- https://cdn.shopify.com/s/files/1/0435/5689/6927/files/31052741230.pdf
- https://cdn.shopify.com/s/files/1/0437/3915/2535/files/lalimijoxupireroguzazi.pdf
- https://cdn.shopify.com/s/files/1/0438/8818/1400/files/99384183481.pdf
- https://cdn.shopify.com/s/files/1/0432/6634/3072/files/delipetugu.pdf
- https://cdn.shopify.com/s/files/1/0434/7923/6760/files/64008487281.pdf
- https://cdn.shopify.com/s/files/1/0428/1974/7999/files/breast_cancer_awareness_thesis.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65529241957.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_off000054bd.bin` `531d43a02a40c2e54bac9162c63657f6fec8cd2899f093695bdbbbd60336f675`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54BD	4972 bytes
`font_01_sfnt_off0000657f.bin` `292ce683d45a43646c505af80823fda87b3440a74248f34e194de828edbcef28`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x657F	10704 bytes
`font_02_sfnt_off00008a12.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A12	4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.