PDF malware analysis — malicious · bf35203984eca060

MALICIOUS

PDF

71.9 KB Created: 2021-01-14 15:01:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 780f3eaca41eeb081bbfe1e591e22790 SHA-1: b89cfdbd54227f136578c2244cc6c23bf2ca17e7 SHA-256: bf35203984eca060d868b5e975f45f603fad4c5f8fc70d984b8e4c5f8e36b93b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
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://trafffe.ru/123?utm_term=helios+flight+522 PDF link annotation
- https://static.s123-cdn-static.com/uploads/4475737/normal_5ff80e3391c6f.pdfIn PDF document text
- https://cdn.sqhk.co/pegebatanuz/Ejb3Ujc/bright_memory_app_download.pdfIn PDF document text
- https://site-1177565.mozfiles.com/files/1177565/cramped_synonym_list.pdfIn PDF document text
- https://cdn.sqhk.co/rapowipijes/OFO4ahd/enerpac_columbus_wi_address.pdfIn PDF document text
- https://site-1176903.mozfiles.com/files/1176903/family_reunion_coloring_sheets.pdfIn PDF document text
- https://site-1167955.mozfiles.com/files/1167955/new_berserk_news.pdfIn PDF document text
- https://cdn.sqhk.co/mezugifosa/rhghiRY/artillery_sidewinder_x1_v4_firmware.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410459/normal_5fae2544906ee.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/wopari/29764521891.pdfIn PDF document text
- https://s3.amazonaws.com/zirojopemup/xiradox.pdfIn PDF document text
- https://s3.amazonaws.com/nagev/downers_grove_weather_report.pdfIn PDF document text
- https://s3.amazonaws.com/jeromisixinolib/gokuxenabagetelupefuret.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In 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_off0000de12.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE12	4940 bytes
SHA-256: `29f7b685e641b9245b432f0f9bc90e42a79916316343282e4ff27cd8957c3ef8`
`font_01_sfnt_off0000eee9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEE9	10552 bytes
SHA-256: `f022b0a08d03da5f578a4cd6453f85960240b9f9abcf58bdae156e12a5f2d91c`

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