PDF malware analysis — malicious · 8faea0c75042a79d

MALICIOUS

PDF

69.9 KB Created: 2021-01-07 20:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: ee9e7cc88248c2f04ec27c0a7dbf61a4 SHA-1: 6d6ac4d2b3c26ee623f9d6ab65d9467421be870b SHA-256: 8faea0c75042a79d63ef166468b76e5269f2e6370b6950cbabf0893d1a816acd

212 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links, with one specifically identified as a known malicious redirector. The heuristic firings indicate a link farm designed to direct users to malicious infrastructure, likely for phishing or malware distribution. While no scripts were extracted, the PDF structure and embedded links strongly suggest an attempt to lure users to malicious websites.

Machine Learning

Nyx PDF Classifier malicious score 0.8937

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://cctraff.ru/aws?utm_term=facility+maintenance+checklist+pdf In PDF document text
- https://zubisixoligifi.weebly.com/uploads/1/3/4/4/134479514/6128261.pdfIn PDF document text
- https://biwasigefo.weebly.com/uploads/1/3/1/3/131398444/24b07e.pdfIn PDF document text
- https://kebapalof.weebly.com/uploads/1/3/4/3/134317433/2986007.pdfIn PDF document text
- https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/kerovujabenalebixa.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/9d8122e1-9588-4bff-b33b-f2fe91d19ac5/20141145554.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/96c1bab8-970c-4bdf-b053-4b3b126627d5/xusifiporofuli.pdfIn PDF document text
- https://s3.amazonaws.com/batoragubukepo/2018_camaro_ss_manual_0-_60.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/be2d01f6-deec-42c6-859e-027cceefe066/pokemon_level_up_sound_mp3.pdfIn PDF document text
- https://s3.amazonaws.com/vukumesoj/debt_snowball_spreadsheet_dave_ramsey.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5e11e714-2cd4-49b1-a8ef-57ea7c22c103/real_free_amazon_gift_card_generator.pdfIn PDF document text
- https://s3.amazonaws.com/bejideba/shell_script_tutorial_point.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5007ad21-b5e8-4c48-86a5-503b3145f372/fibilefap.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ece3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECE3	2960 bytes
SHA-256: `4fd23780e8bc1225147496f7cf1539e4cbb7afbb69deb1762206f21ee21730a8`
`font_01_sfnt_off0000f776.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF776	5420 bytes
SHA-256: `8180332253d283e4fe895f6809d8e28cd478e92af462f3938c8a72d382a1e640`

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