PDF malware analysis — malicious · 07493378b7cda017

MALICIOUS

PDF

274.2 KB Created: 2020-07-30 09:13:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3f63d449901376cc990077018538546c SHA-1: bb74e72682bdea1dd1ff9377dc8c85003ac0abc2 SHA-256: 07493378b7cda017b2aa09d9c9538f70a4954bb5f2af532998113398dc798287

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a link to an "Economist april 2020 pdf". The ML classifier also flagged this PDF as malicious with high confidence. The document body is heavily obfuscated, but the presence of the malicious URL strongly suggests an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9922

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.
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=economist+april+2020+pdf
- http://files.facilityaid.com/uploads/1/3/1/8/131856398/4307156.pdf
- http://files.sigmapivu.com/uploads/1/3/1/4/131414743/jemavujit.pdf
- http://files.joyfulbird.org/uploads/1/3/1/3/131383305/473684.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0435/8812/4830/files/xedilifapujizepajog.pdf
- https://cdn.shopify.com/s/files/1/0433/3407/4523/files/28782031850.pdf
- https://cdn.shopify.com/s/files/1/0432/7990/9030/files/vufunabajajabarijiwusib.pdf
- https://cdn.shopify.com/s/files/1/0432/7188/0870/files/27987433717.pdf
- https://cdn.shopify.com/s/files/1/0428/5064/8223/files/wepofutokup.pdf
- https://cdn.shopify.com/s/files/1/0431/8288/2980/files/23340067992.pdf
- https://cdn.shopify.com/s/files/1/0436/9799/5941/files/76284591064.pdf
- https://cdn.shopify.com/s/files/1/0427/8163/8812/files/toxowopimujikuriza.pdf
- https://cdn.shopify.com/s/files/1/0432/1466/7934/files/nifapedazebeka.pdf
- https://cdn.shopify.com/s/files/1/0429/8070/4405/files/44993565424.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/
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0003eddd.bin` `3a065d20d5efae9478cba31009460d788e83b09bde9c86b4d1d179e6278f1fe0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3EDDD	5204 bytes
`font_01_sfnt_off0003ff59.bin` `20cec89e4e9b8075992433f0029045a0e2b220c2e6bdd2e1620d9c41101473fa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3FF59	10844 bytes
`font_02_sfnt_off0004244d.bin` `0d18a5021adb640ca635d2ebd2fd2876c56ae08f84edbbe850fae47604b798cf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4244D	16200 bytes

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