Malicious PDF — malware analysis report

Static analysis result for SHA-256 180062a85d55fef2…

MALICIOUS

PDF

110.4 KB Created: 2021-03-22 13:56:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26646911194d80a53f74395d56909492 SHA-1: 4060754b0db1a374a87c68f6b03ddff4d895ae87 SHA-256: 180062a85d55fef21696f78c30690a5f70dfb663060f9a747abeb4780456cfbf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many of which are to suspicious domains, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to a compromised site for further exploitation or credential harvesting. No scripts were extracted, but the presence of multiple external URIs points to a redirection-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://resalured.ru/award?keyword=calendario+spal+2020+19+pdf
    • https://dugigoje.weebly.com/uploads/1/3/4/7/134754128/bivakaseb.pdf
    • http://cosmicgig.com/dajavesirakuwinuzewi7k15h.pdf
    • http://infonewstravel.com/bullet_train_android_gamergzva.pdf
    • http://shopeuro.pro/playstation_4_slim_500gb9ml1f.pdf
    • http://sugameloxufe.mywebcommunity.org/82769018321.pdf
    • https://kekisuganuzab.weebly.com/uploads/1/3/4/7/134721312/lirixenu.pdf
    • https://fobolobal.weebly.com/uploads/1/3/4/3/134317950/912376.pdf
    • http://kvyovk.xyz/tipakemigufarasajijufc8r4j.pdf
    • https://dodezugufiz.weebly.com/uploads/1/3/5/3/135331092/ac9f85d67.pdf
    • https://fojaxekixuwid.weebly.com/uploads/1/3/4/7/134743661/839430.pdf
    • http://leopards.space/2235266499wiqn6.pdf
    • http://rowexusaje.mypressonline.com/define_barrier.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://edb7bb8d-792a-4213-93ec-7f573d37cc74.filesusr.com/ugd/bfd504_2749e527ad0f43279b1cdc4643eed2f9.pdf?index=true
    • https://s3.amazonaws.com/tokudapele/32833277342.pdf
    • https://4868a29a-6d77-448d-a9c5-bc5c6a1713c3.filesusr.com/ugd/060e50_be126113dbd145909e5099124edc1493.pdf?index=true
    • https://s3.amazonaws.com/zidosozawok/11389007634.pdf
    • https://s3.amazonaws.com/wegemebufojafak/kituredezotaxamokati.pdf
    • https://96a9e3af-f0c3-4048-9e6c-0ad8da3c6018.filesusr.com/ugd/15d534_e5198026804e4c24a42a90e5cd9078bb.pdf?index=true
    • https://s3.amazonaws.com/vazisi/bootable_usb_windows_7_32_bit.pdf
    • https://33edd578-4186-4695-89f3-f56a5a23fc53.filesusr.com/ugd/f17c08_423688c37884445e8c4547eb1906c87a.pdf?index=true
    • https://12350a4d-732a-4148-85a7-4fa27f2a77ec.filesusr.com/ugd/17beed_aeec87385aa04dab89821a73e664685e.pdf?index=true
    • https://s3.amazonaws.com/xonobijikivo/diy_loft_bed_plans.pdf
    • https://f6b99bba-f064-431f-ab68-6eacb91b2703.filesusr.com/ugd/35e1ce_c6e465a23d8a462fae50e1f23a30a0c8.pdf?index=true
    • https://4dcfe184-cd6c-48f8-9f23-5461c743a1d4.filesusr.com/ugd/cc8533_25edb505625c41919b8b04b9c75e2136.pdf?index=true
    • https://1c985592-4fe2-425a-b8d2-7dc24782370c.filesusr.com/ugd/a13bc2_8ea08649636b4e7a86508373e508c4bd.pdf?index=true
    • https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_cb16eccb0c8d403f8d3f42c3508c8e74.pdf?index=true
    • 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.

FilenameKindSourceSize
font_00_sfnt_off00016dac.bin
27d1509fd67f63cc7f4469ed8237fac7dad03ec5b13a4ef99b28d12ab6f4f84a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16DAC 5424 bytes
font_01_sfnt_off00018026.bin
f6405113a3d048215543dea08c20319468ac971c981606ec5ee0ad478f3544b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18026 13700 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.