PDF malware analysis — malicious · ccd5b1fe0038c874

MALICIOUS

PDF

67.0 KB Created: 2021-02-26 17:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17

MD5: 8895f8397a73dbcc70466c1b9299bfca SHA-1: 89465e6a4116d25ac7f5f1fc2a5089081e5da661 SHA-256: ccd5b1fe0038c8745b21cc55e808af10c0d014dd581ab885811b7bf08b3024a0

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, which is a strong indicator of phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature. The embedded URL is likely intended to lead the user to a malicious site, possibly to download a second-stage payload or phish for credentials.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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
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://yafferge.ru/wix?keyword=chem+lab+9+answers In PDF document text
- http://siwivelijutore.medianewsonline.com/do_self_cleaning_water_dispensers_work.pdfIn PDF document text
- http://rosutob.getenjoyment.net/los_renglones_torcidos_de_dios_gratis.pdfIn PDF document text
- https://cdn.sqhk.co/bagadogod/zukyjjq/living_room_game_table_and_chairs.pdfIn PDF document text
- https://cdn.sqhk.co/kezixowog/iahejgh/hop_step_jump_anime.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://kepagewav.atwebpages.com/basic_civil_engineering_drawing_book.pdfIn PDF document text
- https://s3.amazonaws.com/xiwevitox/blister_in_the_sun_guitar_tab.pdfIn PDF document text
- https://s3.amazonaws.com/niwotipugonuvoz/39938780112.pdfIn PDF document text
- https://s3.amazonaws.com/zuwosil/7645003727.pdfIn PDF document text
- https://s3.amazonaws.com/loranoduzuja/epilepsy_management_plan_form.pdfIn PDF document text
- https://s3.amazonaws.com/xezujuxoz/68132997744.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_off0000cc19.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC19	5220 bytes
SHA-256: `af4ab72a7e89854dddc6311af21d37f9f4059d95fa616da507813b86e14fc21c`
`font_01_sfnt_off0000ddb2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDDB2	9952 bytes
SHA-256: `7060481724155f461fad950bd89a7170ee8423dee8ba14e90a89fb3684ad223a`

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