PDF malware analysis — malicious · 616678dc9148808e

MALICIOUS

PDF

66.3 KB Created: 2020-11-27 19:25:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1558fa8e41540598bdf785abd9127d34 SHA-1: 95af431ac7ccd155ed8b9bde8281865c16e501ff SHA-256: 616678dc9148808ec2a47817bd47f022e3a132efbd1592f50d22f982acbb84ae

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. The primary URL, 'https://trafficel.ru/123?utm_term=tor+con+index+for+tomorrow', suggests a phishing or malicious redirection attempt. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a high likelihood of it being used for malicious purposes such as distributing further malware or conducting phishing campaigns.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

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.
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://trafficel.ru/123?utm_term=tor+con+index+for+tomorrow
- https://mawoluji.weebly.com/uploads/1/3/4/2/134265904/8140088.pdf
- https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/wakujumikuw.pdf
- https://cdn-cms.f-static.net/uploads/4414498/normal_5f9fac235f25f.pdf
- https://cdn-cms.f-static.net/uploads/4367301/normal_5f927d448d355.pdf
- https://cdn-cms.f-static.net/uploads/4383449/normal_5f8f8959d4ddb.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/fomaralunex/bone_of_the_ancients_relic.pdf
- https://s3.amazonaws.com/tadovu/pluriel_des_adjectifs_de_couleur.pdf
- https://s3.amazonaws.com/lekizopiloref/duel_links_cheat_engine_table.pdf
- https://s3.amazonaws.com/dozuga/architectural_styles_in_software_architecture.pdf
- https://s3.amazonaws.com/petuzutemixuvod/mevikonofotepagigelevaro.pdf
- https://s3.amazonaws.com/nitidadufetenu/govutedejuzunugipepotiw.pdf
- https://uploads.strikinglycdn.com/files/455db13d-003b-4280-affe-340cf11c41af/weboledivute.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c7a2.bin` `879d53e56b3dadec10a39fe98fc5db20f86f61669d3510f10b607527fdfba6bb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC7A2	4856 bytes
`font_01_sfnt_off0000d827.bin` `b6811eade17f36818dfbd3783bca1de78a948b9698a06c1727f3a665be762a09`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD827	10556 bytes

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