PDF malware analysis — malicious · 959b457acbb3bf78

MALICIOUS

PDF

77.5 KB Created: 2020-09-17 05:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a4ddf431ab3ab5740dabd4e5861e4708 SHA-1: ea786073d6c6792d59b83bf66192804d0bcaed13 SHA-256: 959b457acbb3bf78dd5bc66636c5d0e79a69dc65d09003e2c9df23863f11659e

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links to external websites, many of which appear to be part of a link farm designed to manipulate search engine results. One critical heuristic identified a link to a known malicious redirector infrastructure at https://ttraff.club/wix. The document body, though heavily obfuscated, contains the same URL. This suggests the primary purpose is to redirect the user to malicious content.

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.club/wix?keyword=muslim+tribes+in+mindanao
- http://files.thedivineu.academy/uploads/1/3/1/6/131606954/fb7ae563.pdf
- http://files.paolositaliankitchen.com/uploads/1/3/0/8/130873941/guzusazezomisifo.pdf
- http://files.sprucehousingcoop.com/uploads/1/3/1/4/131453950/zasikariget-gabumisakopepum-foliwemazutimo-zufozeva.pdf
- http://files.danbrambilla.com/uploads/1/3/1/3/131398292/6805585.pdf
- http://tujugomad.wesselsdancestudio.com/uploads/1/3/0/8/130874388/e40a2cc75dfe0fc.pdf
- http://kutop.fillinupmyteacup.com/uploads/1/3/0/8/130873947/fesagabituxozexarer.pdf
- http://files.annagalatirealtor.com/uploads/1/3/0/7/130776718/979473.pdf
- http://files.fotsga.com/uploads/1/3/0/7/130739311/ee63bb.pdf
- https://cdn.shopify.com/s/files/1/0434/8667/5109/files/management_information_system_questions_and_answers.pdf
- https://cdn.shopify.com/s/files/1/0429/6835/0886/files/tow_dolly_straps_tractor_supply.pdf
- https://cdn.shopify.com/s/files/1/0428/8957/6601/files/pebagefajelewevin.pdf
- https://cdn.shopify.com/s/files/1/0434/1438/8888/files/telowowewimuwodibilukuw.pdf
- https://cdn.shopify.com/s/files/1/0440/1014/3902/files/sofa_score_sepsis.pdf
- https://cdn.shopify.com/s/files/1/0434/5892/0610/files/jewanaxizom.pdf
- https://cdn.shopify.com/s/files/1/0430/6875/2023/files/xapivopoxifo.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_off0000e5d6.bin` `3bbc5eca6e2a3672dfc12226ace759cebb69d0ed442cd463ff522deee90af593`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5D6	5000 bytes
`font_01_sfnt_off0000f6ae.bin` `00924a5cf0b25344feecfc16c1ec6697d7cfb15342ec7481ead0ae32dc93603a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF6AE	10468 bytes
`font_02_sfnt_off00011a71.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A71	4324 bytes

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