PDF malware analysis — malicious · c2635e8664323321

MALICIOUS

PDF

64.4 KB Created: 2020-12-24 22:20:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c36a9e0e2efb144635513543a49f9cf8 SHA-1: b25ac192861350e7e6161b6f02e72e2b44375d2f SHA-256: c2635e866432332164d16ff70226a9ba5bfa3ad1961a8c1860cb21cda3a26049

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains an embedded URL that redirects to a suspicious domain, identified by heuristics and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Angry birds rio game uptodown', indicating a phishing or malware distribution attempt. The presence of external URI and ML classification further supports the malicious nature of this PDF.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/aws?utm_term=angry+birds+rio+game++uptodown
- https://cdn-cms.f-static.net/uploads/4388412/normal_5f9dad63537c1.pdf
- https://namutaborizelo.weebly.com/uploads/1/3/4/7/134766338/cdfa6b53.pdf
- https://cdn.sqhk.co/kurapobal/R1ykM0f/airline_tycoon_online_3.pdf
- https://jiwadurator.weebly.com/uploads/1/3/0/7/130776405/ditaxekuta.pdf
- https://cdn.sqhk.co/joraxeneli/SipPsk9/battlevoid_harbinger_ios_review.pdf
- https://cdn-cms.f-static.net/uploads/4371005/normal_5f9272cc2f224.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/lazolu/39950042283.pdf
- https://s3.amazonaws.com/mulerux/revenge_of_the_sith_free_reddit.pdf
- https://s3.amazonaws.com/gupawupigawono/acute_cor_pulmonale_treatment_guidelines.pdf
- https://s3.amazonaws.com/xetasif/71327652698.pdf
- https://s3.amazonaws.com/zafaronivaj/wifalimot.pdf
- https://uploads.strikinglycdn.com/files/b055ec7a-921e-4e42-b2e9-d9f665f31db7/cheltenham_high_school_principal.pdf
- https://uploads.strikinglycdn.com/files/3035e707-2c56-4e5e-bd7c-fe51e139415e/68420025542.pdf
- https://s3.amazonaws.com/pobixedele/c_l_s_ka_full_form.pdf
- https://uploads.strikinglycdn.com/files/4969f200-4da8-4efc-ac2f-eb1f7ff96cda/jiwanuwiraminepapazasap.pdf
- https://uploads.strikinglycdn.com/files/89639d28-52ed-4a92-8ae2-88fc9e957911/48439822211.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_off0000bb0b.bin` `18584a52be4434aca99ae531c25e2c60d9c32f69de64d4619fac4833f1bd5d4b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBB0B	5572 bytes
`font_01_sfnt_off0000cdfd.bin` `004fb7cec74f2caf6ada72a91ca459d0dae9f6b247d58eb272322f1f2eb2deb0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCDFD	12308 bytes

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