Malicious PDF — malware analysis report

Static analysis result for SHA-256 a38e379edb572c0b…

MALICIOUS

PDF

83.1 KB Created: 2021-02-16 20:10:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 74c26b787375edd83d6bacbf196d7bd4 SHA-1: 51e0d813df7413a0823a8dcb37019ed8e8ea24fa SHA-256: a38e379edb572c0b0b684c60c0458cb0a2828d52c740a86c683de84537a2b211
186 Risk Score

Malware Insights

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

This PDF document was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO spam campaign designed to redirect users to malicious sites. The embedded URLs, such as 'https://druttle.ru/strik?utm_term=beats+solo+wireless+difference+between+2+and+3', are likely part of this redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/strik?utm_term=beats+solo+wireless+difference+between+2+and+3 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413362/normal_601de45f565fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387427/normal_602179ae1bbaa.pdfIn PDF document text
    • https://tajidirubizev.weebly.com/uploads/1/3/0/7/130739153/8833229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475016/normal_60148ee350c20.pdfIn PDF document text
    • https://lugonejiborin.weebly.com/uploads/1/3/5/3/135336075/tuder-bexevapinupa-vuzoselumikup.pdfIn PDF document text
    • https://xezajorawelo.weebly.com/uploads/1/3/1/4/131408008/womuwat.pdfIn PDF document text
    • http://hesap-al-sat.com/83820819904drzwm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405206/normal_6010cf4af3097.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487641/normal_5fccd82d8bde7.pdfIn PDF document text
    • http://temppicture.xyz/energy_anti_stress_loops_apk_modiqu3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471686/normal_5fe5e389de621.pdfIn PDF document text
    • https://kaperimivegorew.weebly.com/uploads/1/3/4/3/134371305/vivabosoluniv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bivezekamolekaz.rf.gd/mubivolixotebajoketu.pdfIn PDF document text
    • http://rarejis.epizy.com/1288091487.pdfIn PDF document text
    • http://lovafis.rf.gd/baiju_bawra_1952_songs.pdfIn PDF document text
    • http://jatuxijor.epizy.com/fidelity_ira_beneficiary_distribution_form.pdfIn PDF document text
    • http://roxadib.epizy.com/17413269722.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED2 2900 bytes
SHA-256: 10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a
font_01_sfnt_off0000f915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF915 5380 bytes
SHA-256: 7c8025d5d8c39486e1c5db87bec9c7ffae4af544d20942adfa18617e84176a27
font_02_sfnt_off00010b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B73 10936 bytes
SHA-256: ada8f3fca8163063c09386d581186dafae0d467be41fb26a4e65db414efd6743
font_03_sfnt_off000130ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130AD 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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