PDF malware analysis — malicious · 9d26df28b6163196

MALICIOUS

PDF

39.5 KB Created: 2020-08-11 06:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d3adf332e96c979af6eaa044e6459fab SHA-1: d8e28a2b61c75e152b86e4409ebf7ff4aae51275 SHA-256: 9d26df28b61631967d38dc0f23de58ec649fdc119acd6de0b36b183ad287b023

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, contains the same redirector URL. This indicates a likely attempt to lure users to malicious sites through a link farm, potentially for phishing or malware distribution.

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/wb?keyword=lascia%20ch
- http://files.j-6forge.com/uploads/1/3/0/9/130969686/zoxufaruva.pdf
- http://bugewolo.hodgesfamilypractice.org/uploads/1/3/0/7/130738615/5a003a3.pdf
- http://files.buildsmartgroup.com/uploads/1/3/0/9/130969562/95afbd7f2.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/581871399.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/526428265.pdf
- https://cdn.shopify.com/s/files/1/0429/6717/1223/files/44911544653.pdf
- https://cdn.shopify.com/s/files/1/0430/7684/5728/files/90644789884.pdf
- https://cdn.shopify.com/s/files/1/0429/2149/2643/files/cardinal_numbers_list.pdf
- https://cdn.shopify.com/s/files/1/0431/5847/0816/files/sufixizirej.pdf
- https://cdn.shopify.com/s/files/1/0434/6013/3030/files/liwifezemurus.pdf
- https://cdn.shopify.com/s/files/1/0430/2887/3367/files/pdf_annotation_apps_iphone.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65621046881.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_off00005c94.bin` `8e79a84b386fbae56c680907cbff5be56e60af6b7ea93b6893cdf3bcc062b000`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C94	5264 bytes
`font_01_sfnt_off00006e77.bin` `322ff6a43d8c4c592cc8a1e1e08071ee6fcde4475b29c25fbbc46c1787ca6f7a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E77	10212 bytes

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