PDF malware analysis — malicious · 320c51a56267b8e1

MALICIOUS

PDF

37.9 KB Created: 2020-08-23 20:07:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f90b7c4091815257479bfb873a027fe3 SHA-1: 08f81df2dcd480881fb5ecc62fffa2635f309232 SHA-256: 320c51a56267b8e1f91c520fd24a99a1bc3515e836708cf7d2eefb4786f7e147

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains the same lure text and URL. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. The ML classifier strongly flagged this PDF as malicious.

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=bible+quiz+telugu+pdf
- http://rovexa.passionatephotographytx.com/uploads/1/3/1/8/131871740/fafatabudetododoje.pdf
- http://files.katemwest.com/uploads/1/3/1/3/131381658/fevalu.pdf
- http://files.rumonek.com/uploads/1/3/1/3/131379792/e414ef.pdf
- https://cdn.shopify.com/s/files/1/0432/5795/4464/files/agency_agreement.pdf
- https://cdn.shopify.com/s/files/1/0430/0688/6051/files/euler_phi_function.pdf
- https://cdn.shopify.com/s/files/1/0427/8360/4903/files/32654075039.pdf
- https://cdn.shopify.com/s/files/1/0430/9496/6421/files/82173244970.pdf
- https://cdn.shopify.com/s/files/1/0431/6397/5835/files/91507051803.pdf
- https://cdn.shopify.com/s/files/1/0430/8058/1274/files/24966367392.pdf
- https://cdn.shopify.com/s/files/1/0445/2735/4015/files/afd_sachsen_wahlprogramm.pdf
- https://cdn.shopify.com/s/files/1/0430/8264/5665/files/230443439.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_off000042c7.bin` `1ab6369aba32e0fbec39e60a13c59c8a3ed04811d1fefc8f83103466524ff227`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x42C7	5092 bytes
`font_01_sfnt_off00005424.bin` `ac4d50c1f6dc0356b9e65a727ab57248b3c2281a653948a388fd6c8d1da0b810`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5424	6452 bytes
`font_02_sfnt_off0000690c.bin` `d436162138d00593a27f4f2d1870acbc30aefc3094a3da8da1e681f276f64891`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x690C	9868 bytes

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