PDF malware analysis — malicious · eccd0db545c02898

MALICIOUS

PDF

46.9 KB Created: 2020-07-29 23:25:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ace1da104dbc6bb7153e0e9709a4b128 SHA-1: 94e8f0eee8522963c5380ddcf53f21f40008f294 SHA-256: eccd0db545c02898e8e567aad6b7b0713b0460d246ebf4241140978a0efda485

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is ttraff.com, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious documents.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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.com/pify?keyword=adestramento+inteligente+alexandre+rossi+pdf
- http://files.tutorvirginia.com/uploads/1/3/1/8/131871907/4529634.pdf
- http://files.hisonelife.com/uploads/1/3/2/7/132712206/605500e61cb9.pdf
- http://files.myfavoriteoldies.com/uploads/1/3/1/0/131071067/zupazufo.pdf
- https://cdn.shopify.com/s/files/1/0430/8454/6209/files/belepakajenekisavimolij.pdf
- https://cdn.shopify.com/s/files/1/0428/8937/9993/files/lezevimuxofijupirixik.pdf
- https://cdn.shopify.com/s/files/1/0430/0449/3987/files/kafonawemolulividimupomaf.pdf
- https://cdn.shopify.com/s/files/1/0428/7689/5398/files/garukoresiluzujumujapuj.pdf
- https://cdn.shopify.com/s/files/1/0432/5523/4710/files/kekofovoworuxojazowi.pdf
- https://cdn.shopify.com/s/files/1/0436/2525/0974/files/30229563674.pdf
- https://cdn.shopify.com/s/files/1/0429/3482/9223/files/51513666688.pdf
- https://cdn.shopify.com/s/files/1/0433/8286/6072/files/38937916238.pdf
- https://cdn.shopify.com/s/files/1/0432/6139/5102/files/90273714155.pdf
- https://cdn.shopify.com/s/files/1/0435/3189/4944/files/semifovukezon.pdf
- https://cdn.shopify.com/s/files/1/0432/2823/3887/files/menasebipivunutetez.pdf
- https://cdn.shopify.com/s/files/1/0431/6191/1460/files/xejev.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdf
- https://cdn.shopify.com/s/files/1/0437/3564/6357/files/32237798599.pdf
- https://cdn.shopify.com/s/files/1/0433/4570/7166/files/nisuvemabotudi.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_off00007599.bin` `34a2718f225a7d609d6a3969f71ae77a391bd6b9a0726318f64e3168d772e379`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7599	5208 bytes
`font_01_sfnt_off00008736.bin` `c72310c791c73e19efbf63641b63cd53da03c206351142e535597a25f82d3992`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8736	12352 bytes

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